{
  "kind": "pairwise_compare",
  "timestamp": "2026-06-03T14:36:51",
  "wall_clock_seconds": 148.5,
  "anchor": {
    "label": "iter-0016",
    "dir": "runs/20260603-114823/images/iteration-0016"
  },
  "candidate": {
    "label": "iter-0021",
    "dir": "runs/20260603-114823/images/iteration-0021"
  },
  "results": [
    {
      "persona_id": "m01",
      "persona_name": "Caleb",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m01-seed1.png",
      "candidate_image": "m01-seed1.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's warm golden-hour light carves out cheekbone structure and jaw angle that L's flat window light obscures; R's swept-back hair fully reveals face geometry vs L's curtained hair hiding brow and temple."
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "Golden-hour side lighting in L carves sharp cheekbone contour and jaw angle clearly; R's flat diffuse light softens the same facial structure making it read boyish and vacant rather than brooding."
      }
    },
    {
      "persona_id": "m01",
      "persona_name": "Caleb",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m01-seed2.png",
      "candidate_image": "m01-seed2.png",
      "outcome": "tie",
      "confidence": "low",
      "position_bias": true,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's warm diffused window light sculpts his cheekbones and jawline more flatteringly; his direct parted-lip eye contact reads more charged than R's slightly upward-averted glance, and the cream linen shirt contrasts his complexion better than R's flat charcoal."
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's direct camera eye contact + dramatic side lighting carves sharper jaw-shadow contrast; R's diffuse flat light and off-camera gaze lose that magnetic pull on a scroll"
      }
    },
    {
      "persona_id": "m02",
      "persona_name": "Mateo",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m02-seed1.png",
      "candidate_image": "m02-seed1.png",
      "outcome": "candidate",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "high",
        "reason": "R shows sharper jawline angle, visible deltoid-to-arm taper in black tank, upright posture revealing broader shoulder frame, and a confident smirk vs L's softer seated slump that flattens his physique"
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's 3/4 angle sharpens jawline definition visibly; standing pose reveals shoulder-to-waist taper; golden side-lighting sculpts cheekbones vs R's flatter even light in seated compressed frame."
      }
    },
    {
      "persona_id": "m02",
      "persona_name": "Mateo",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m02-seed2.png",
      "candidate_image": "m02-seed2.png",
      "outcome": "anchor",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L's golden-hour close-up carves a sharper jaw angle with stubble definition and delivers direct, high-intensity eye contact; R's wider, cooler-lit shot flattens facial structure and spiky hair reads younger/boyish vs L's textured curls which add presence."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's light stubble sharpens jaw angle visibly, closer crop exposes broader shoulder-to-arm width, and his expression reads self-assured vs. L's slightly boyish, tentative smile on a softer clean-shaven face."
      }
    },
    {
      "persona_id": "m03",
      "persona_name": "Jiwon",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m03-seed1.png",
      "candidate_image": "m03-seed1.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's warm side-lighting sculpts cheekbone and jaw definition more sharply, and the three-quarter seated frame reveals the lean build that R's tight crop hides; R's hand-to-chin pose reads boyish where L's direct unbraced gaze lands more confident and grounded"
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R shows notably broader neck width and sharper jaw angle with dramatic side-window light sculpting cheekbones; L has strong direct eye contact but flatter frontal lighting flattens facial structure by comparison."
      }
    },
    {
      "persona_id": "m03",
      "persona_name": "Jiwon",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m03-seed2.png",
      "candidate_image": "m03-seed2.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's tighter crop reveals sharper jaw angle and larger, more intense eyes with visible lid depth \u2014 face structure hits harder up close vs L's softer wider-framed expression"
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L has sharper jaw angle, more direct piercing eye contact that lands immediately, and ink-stained fingers visible \u2014 R's longer hair suits the persona but softer jawline and downcast gaze read less magnetic."
      }
    },
    {
      "persona_id": "m04",
      "persona_name": "Marcus",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m04-seed1.png",
      "candidate_image": "m04-seed1.png",
      "outcome": "anchor",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L has a sharper angular jawline, more intense brooding direct eye contact, and warm golden-hour window light sculpting his face \u2014 vs R's flat indoor lighting and softer, rounder jaw that reads noticeably less striking."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's dramatically high, wide cheekbones create striking bone structure L lacks; fitted button-up reveals broader shoulders and chest tapering visibly \u2014 frame is actually shown. L's jawline is clean but lean-to-bony; overall frame less commanding despite warmer expression."
      }
    },
    {
      "persona_id": "m04",
      "persona_name": "Marcus",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m04-seed2.png",
      "candidate_image": "m04-seed2.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's tighter framing reveals warm amber eyes making direct contact plus broader muscular shoulder with striking tribal tattoo \u2014 L's expression reads flat and face sits too small in frame to land"
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's warm amber eyes with direct, locked-in gaze and slight smirk create immediate pull \u2014 R's fuller frame is solid but the neutral, slightly open-mouthed expression flattens the face; L wins on eye contact quality and facial expression magnetism alone."
      }
    },
    {
      "persona_id": "m05",
      "persona_name": "Dario",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m05-seed1.png",
      "candidate_image": "m05-seed1.png",
      "outcome": "tie",
      "confidence": "low",
      "position_bias": true,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's warm golden-hour light sculpts his sharp jawline and cheekbones visibly better; his smile is genuinely engaged with direct eye contact \u2014 R's expression is flatter and the cooler lighting loses that facial definition."
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's direct golden-hour warmth sculpts his sharp jawline and cheekbones dramatically; R's lighting is slightly flatter on the face, softening those same features despite better body/lifestyle context."
      }
    },
    {
      "persona_id": "m05",
      "persona_name": "Dario",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m05-seed2.png",
      "candidate_image": "m05-seed2.png",
      "outcome": "tie",
      "confidence": "low",
      "position_bias": true,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L's warm golden-hour sidelight carves out his cheekbones and jawline with visible shadow definition; R's flat ambient light flattens the same face into a generic snapshot. L's open smirk also reads warmer and more inviting vs R's neutral closed expression."
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's tighter crop locks in his sharp jaw angle and dark intense eyes at full impact; R's wider pull-back shrinks facial definition and dilutes the same features."
      }
    },
    {
      "persona_id": "m06",
      "persona_name": "Adrian",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m06-seed1.png",
      "candidate_image": "m06-seed1.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's standing frame reveals visibly broader shoulder span and open-jacket chest, making the physical presence register harder; eye contact is sharper and more locked-in vs. R's softer seated gaze that reads slightly passive."
      },
      "r2": {
        "winner": "R",
        "confidence": "high",
        "reason": "R shows visibly broader shoulders and exposed chest musculature through the open suit, sharper jawline angle, and a more commanding physical presence \u2014 L's frame is lean-thin by comparison with no body depth visible."
      }
    },
    {
      "persona_id": "m06",
      "persona_name": "Adrian",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m06-seed2.png",
      "candidate_image": "m06-seed2.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's golden-hour window light carves sharper cheekbone and jaw shadow vs L's flat office fluorescents; R's salt-pepper stubble adds hard jaw definition L lacks clean-shaven; R's lean-forward posture exposes broader shoulder-to-torso taper that L's tight crop hides."
      },
      "r2": {
        "winner": "L",
        "confidence": "high",
        "reason": "L's warm directional golden light sculpts his jawline shadow and cheekbone depth; R's flat fluorescent office lighting flattens those same features, making the face look heavier and the bone structure disappear. L's hair has textured volume vs R's slicked-flat look, and the ocean backdrop adds aspirational context that the generic office interior in R kills entirely."
      }
    },
    {
      "persona_id": "m07",
      "persona_name": "Haruki",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m07-seed1.png",
      "candidate_image": "m07-seed1.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's slight warm upturn at the lips plus direct eye contact reads genuine engagement; R has a slightly slack open-mouth neutral expression that kills personality. L's angled warm-light framing also flatters his cheekbone line more than R's flat frontal lighting."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's warm golden window light flatters skin tone vs L's cooler flat lighting; R shows a subtle smirk with genuine expression vs L's blank parted-lip stare; dynamic hand-near-hair pose adds candid personality that L's static forward pose lacks."
      }
    },
    {
      "persona_id": "m07",
      "persona_name": "Haruki",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m07-seed2.png",
      "candidate_image": "m07-seed2.png",
      "outcome": "anchor",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L has warm diffused window sidelighting that sculpts cheekbones and evens skin tone, versus R's flatter direct light exposing skin texture/pores; L also shows fuller frame and more open, inviting expression vs R's slightly tense direct stare"
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R shows larger, more expressive double-lidded eyes and warmer golden side-lighting that sharpens jawline definition; L's diffused flat lighting softens facial structure and reduces contrast on features."
      }
    },
    {
      "persona_id": "m08",
      "persona_name": "Renan",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m08-seed1.png",
      "candidate_image": "m08-seed1.png",
      "outcome": "anchor",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L's warm, genuine smile with direct eye contact creates real pull \u2014 that soft-interior contrast lands; R's flat neutral expression reads generic gym photo, zero personality differentiator."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's warm genuine smile with slight dimple activates and a 3/4 angle reveals shoulder-to-waist taper; L's dead-straight neutral expression reads flat and slightly tense by comparison"
      }
    },
    {
      "persona_id": "m08",
      "persona_name": "Renan",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m08-seed2.png",
      "candidate_image": "m08-seed2.png",
      "outcome": "anchor",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L shows visibly defined deltoids and biceps in standing pose with direct camera eye contact and subtle smirk; R's seated hunched posture compresses frame and the averted gaze reads passive and less engaging"
      },
      "r2": {
        "winner": "R",
        "confidence": "high",
        "reason": "R shows visibly rounded deltoid caps and defined arm musculature that L's hunched seated pose completely obscures; R also has warmer slight smile and more textured curly hair adding character"
      }
    },
    {
      "persona_id": "m09",
      "persona_name": "Wyatt",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m09-seed1.png",
      "candidate_image": "m09-seed1.png",
      "outcome": "tie",
      "confidence": "low",
      "position_bias": true,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's piercing blue-green eyes under warm golden-hour light are an immediate scroll-stopper that R's darker eyes can't match; L also shows a broader shoulder frame in the cropped upper shot vs R's leaner, more recessed posture."
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L has a sharper, more angular jaw angle and darker piercing eyes with harder direct eye contact \u2014 R's bone structure is softer and the open expression reads warmer/less intense, which loses the Rip Wheeler edge"
      }
    },
    {
      "persona_id": "m09",
      "persona_name": "Wyatt",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m09-seed2.png",
      "candidate_image": "m09-seed2.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's ice-blue eyes making direct camera contact are a scroll-stopping differentiator; R's 3/4 gaze kills the connection despite better golden-hour lighting and more visible forearm/frame breadth."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's ice-blue eyes against dark stubble and tousled hair are a specific anatomical scroll-stopper; L has warmer lighting and better direct eye contact but no single feature that sharp."
      }
    },
    {
      "persona_id": "m10",
      "persona_name": "Aarav",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m10-seed1.png",
      "candidate_image": "m10-seed1.png",
      "outcome": "anchor",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L has direct camera eye contact pulling you in, warm side-lighting that flatters his skin tone, and the glasses-adjust pose adds confident character. R's off-camera gaze reads uncertain, and the backlit window washes out contrast on his face."
      },
      "r2": {
        "winner": "R",
        "confidence": "high",
        "reason": "R has direct eye contact vs L's off-axis gaze, a visibly sharper jawline angle, broader forearm-on-table frame showing more physical presence, and warm library bookshelves background that sell the persona. L's thick frames overwhelm a thinner face and the off-camera look reads distracted."
      }
    },
    {
      "persona_id": "m10",
      "persona_name": "Aarav",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m10-seed2.png",
      "candidate_image": "m10-seed2.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's warm backlit golden lighting sculpts his angular jaw and defined cheekbones; his genuine half-smile creates real engagement. R has flatter cool light that flattens his face and a closed neutral expression that reads intimidating rather than inviting."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's warm window light sculpts his angular cheekbones and jawline more clearly; slight smirk beats L's stiff flat stare; glasses-on-head reveals cleaner bone structure vs L's framed face"
      }
    },
    {
      "persona_id": "m11",
      "persona_name": "Yanis",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m11-seed1.png",
      "candidate_image": "m11-seed1.png",
      "outcome": "candidate",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "high",
        "reason": "R's 3/4 angle exposes sharper jaw angle and stronger cheekbone relief; darker wavy hair adds texture L's flat curls lack; forearm tattoo visible confirming persona; L's direct forward-lean flattens facial structure and reads anxious vs. R's controlled smolder"
      },
      "r2": {
        "winner": "L",
        "confidence": "high",
        "reason": "L's three-quarter angle exposes sharp angular jawline and high cheekbones with dramatic shadow accentuation; R's straight-on lean flattens facial structure and the furrowed brow reads tense rather than smoldering."
      }
    },
    {
      "persona_id": "m11",
      "persona_name": "Yanis",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m11-seed2.png",
      "candidate_image": "m11-seed2.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's warm amber kitchen lighting flatters skin tone harder, slicked-back hair reads more intentional/editorial, and the lidded direct gaze with slightly parted lips is genuinely smoldering vs R's softer, slightly unfocused expression. L also shows broader shoulder-to-hip frame in the lean-back pose."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's slicked-back hair exposes sharper cheekbone-to-jaw angle more clearly; leaning-forward pose reveals broader shoulder frame; direct camera eye contact hits harder than L's averted gaze."
      }
    },
    {
      "persona_id": "m12",
      "persona_name": "Seojun",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m12-seed1.png",
      "candidate_image": "m12-seed1.png",
      "outcome": "candidate",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "high",
        "reason": "R has a sharper jawline angle, more prominent defined cheekbones, and direct cold-CEO eye contact that L lacks \u2014 L's features are softer/rounder and the gaze drifts off-camera, killing the magnetic tension"
      },
      "r2": {
        "winner": "L",
        "confidence": "high",
        "reason": "L has a sharper angular jawline, more intense direct gaze with deeper-set eyes, and the silver tie + full suit composition adds authority that R's open collar lacks. R's features are softer and more boyish \u2014 rounder jaw, lighter eye contact."
      }
    },
    {
      "persona_id": "m12",
      "persona_name": "Seojun",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m12-seed2.png",
      "candidate_image": "m12-seed2.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's warm golden side-lighting sculpts the jawline angle and cheekbone definition far more dramatically than L's flat frontal light; the 3/4 pose also reveals broader shoulder-to-neck taper and gives a more cinematic, brooding magnetism vs L's stiff direct stare."
      },
      "r2": {
        "winner": "L",
        "confidence": "high",
        "reason": "L has a sharper jawline angle, more defined cheekbones, distinctively full lips, and a cinematic 3/4 gaze that reads magnetic. R's frontal angle flattens softer, rounder features into a bland expression."
      }
    },
    {
      "persona_id": "m13",
      "persona_name": "Finn",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m13-seed1.png",
      "candidate_image": "m13-seed1.png",
      "outcome": "anchor",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L has direct piercing blue-eye contact and a full open-teeth smile with genuine eye crinkle; R's gaze drifts slightly off-camera and smile is more closed/flat. L's warm golden-hour lighting also sculpts his jaw and tan better than R's cooler flat tone."
      },
      "r2": {
        "winner": "R",
        "confidence": "high",
        "reason": "R shows visibly blue-teal eyes with direct camera contact, full open-teeth smile with genuine warmth, and open shirt revealing lean chest \u2014 three concrete differentiators. L's eyes are shadowed and smile is subdued by comparison."
      }
    },
    {
      "persona_id": "m13",
      "persona_name": "Finn",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m13-seed2.png",
      "candidate_image": "m13-seed2.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's close-up reveals striking pale-blue eyes with direct gaze and a sharply defined jaw with stubble \u2014 both land clearly; R's shirtless body is solid but the face impact is diluted by full-body distance, losing those specific standout features."
      },
      "r2": {
        "winner": "R",
        "confidence": "high",
        "reason": "R has sharper jaw angle with stubble definition, striking pale blue eyes visible at close crop, and a relaxed confident expression vs L's softer face and slightly forced goofy smile. Face wins over body here."
      }
    },
    {
      "persona_id": "m14",
      "persona_name": "Cyrus",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m14-seed1.png",
      "candidate_image": "m14-seed1.png",
      "outcome": "tie",
      "confidence": "low",
      "position_bias": true,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's dead-center direct eye contact is more piercing and arresting; warm amber lighting sculpts his jawline definition more dramatically than R's flatter frontal light. R's gaze angles slightly off-camera, losing that locked-in tension."
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's direct-to-camera smirk with intense eye contact and the eyebrow-cut detail create real screen presence; R's slightly-averted gaze and flat expression kill the bratty charisma that makes this persona work."
      }
    },
    {
      "persona_id": "m14",
      "persona_name": "Cyrus",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m14-seed2.png",
      "candidate_image": "m14-seed2.png",
      "outcome": "anchor",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L's direct dead-center eye contact with camera + sharper jawline angle visible at that straight-on framing + moody warm ambient lighting that flatters angular bone structure; R's slightly upward glance from seated angle softens the jaw and the brighter overhead restaurant light flattens the face."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R delivers direct, piercing eye contact with that bratty half-smirk intact; L's gaze drifts downward-off-camera, losing the confrontational pull. R's cheekbone angularity also reads sharper under the venue lighting."
      }
    },
    {
      "persona_id": "m15",
      "persona_name": "Devon",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m15-seed1.png",
      "candidate_image": "m15-seed1.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's direct frontal eye contact and warm open smile showing teeth create genuine engagement; R's 3/4-profile angle breaks connection and the neutral expression reads flat despite the slightly more visible V-taper."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R delivers direct eye contact plus a visible warm smile, and the tighter gray tee stretches across broader chest-and-shoulder width, showing V-taper clearly. L's three-quarter turn away sacrifices facial engagement and hides frame depth behind a looser red tee."
      }
    },
    {
      "persona_id": "m15",
      "persona_name": "Devon",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m15-seed2.png",
      "candidate_image": "m15-seed2.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L shows visibly defined biceps stretching grey tee sleeves, broader shoulder-to-waist taper in full upper-body frame, and a genuinely warm lean-in expression \u2014 R's tight headshot crop kills frame visibility and the harsh forehead lighting flattens him."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R shows visibly defined biceps straining the grey tee, broader shoulder-to-waist V-taper, and a sharper jawline with light stubble adding maturity \u2014 L's tight crop hides frame and the softer expression reads less commanding"
      }
    },
    {
      "persona_id": "m16",
      "persona_name": "Theo",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m16-seed1.png",
      "candidate_image": "m16-seed1.png",
      "outcome": "tie",
      "confidence": "low",
      "position_bias": true,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's raking golden side light carves deep shadows under the cheekbones, making the angular bone structure dramatically more visible; R's flat indoor light flattens that same structure. L's direct parted-lip gaze also reads more arresting than R's slightly upward-tilted contemplative angle."
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's pale icy-blue eyes read clearly under soft interior cafe light \u2014 the single most arresting feature; R's harsh direct sunlight washes out eye color and carves unflattering shadows across cheekbones, losing the face's best asset."
      }
    },
    {
      "persona_id": "m16",
      "persona_name": "Theo",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m16-seed2.png",
      "candidate_image": "m16-seed2.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's harsh directional sunlight carves visible shadow under the cheekbones, making them dramatically more defined than L's flatter window light. Tighter crop also amplifies the intense blue-eyed gaze. Cardigan layering completes the intellectual look L's plain linen shirt misses."
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's harsh directional sunlight creates stronger shadow-carve on already sharp cheekbones, and the tighter crop amplifies the direct, brooding blue-eyed stare \u2014 more scroll-stopping than R's flatter, more diffuse lighting that softens the same features."
      }
    },
    {
      "persona_id": "m17",
      "persona_name": "Sangwoo",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m17-seed1.png",
      "candidate_image": "m17-seed1.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's 3/4 upward angle reveals sharper jawline definition and more facial dimension; warmer side-window light sculpts cheekbones vs R's flat frontal lighting that flattens features into a passport-photo neutrality"
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R has a noticeably sharper jawline angle and more defined cheekbone structure; L's face reads softer and flatter. R's direct eye contact through the glasses also carries more quiet intensity than L's slightly vacant gaze."
      }
    },
    {
      "persona_id": "m17",
      "persona_name": "Sangwoo",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m17-seed2.png",
      "candidate_image": "m17-seed2.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's direct camera-facing eye contact locks you in vs L's averted gaze; R also shows a noticeably sharper jaw angle and more visible cheekbone definition that reads as more compelling at scroll speed."
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's three-quarter angle adds facial dimension vs R's flat frontal framing; warmer window light sculpts the cheekbone line better; L's slightly upward contemplative gaze reads more authentically intellectual than R's stiff direct stare; off-white linen shirt texture in L fits the soft aesthetic vs R's overlit bright-white cotton look."
      }
    },
    {
      "persona_id": "m18",
      "persona_name": "Cassian",
      "persona_gender": "male",
      "seed": 1,
      "anchor_image": "m18-seed1.png",
      "candidate_image": "m18-seed1.png",
      "outcome": "tie",
      "confidence": "low",
      "position_bias": true,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R delivers direct, unbroken eye contact into lens vs L's slightly averted gaze, and the wider frame shows the full elongated arm-arc line that sells the dancer aesthetic; slicked-back hair on R also sculpts the cheekbones more sharply than L's looser strands"
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's tighter crop locks in direct eye contact and reveals sharp cheekbone structure clearly; L's open-mouth expression reads uncertain and the wider shot loses facial impact."
      }
    },
    {
      "persona_id": "m18",
      "persona_name": "Cassian",
      "persona_gender": "male",
      "seed": 2,
      "anchor_image": "m18-seed2.png",
      "candidate_image": "m18-seed2.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's warm directional side-lighting carves sharper cheekbone definition vs L's flat diffuse light; hair pulled back exposes cleaner jaw-to-neck line; R's composed, direct eye contact beats L's slightly open-mouthed uncertain expression."
      },
      "r2": {
        "winner": "L",
        "confidence": "high",
        "reason": "L has sharper angular cheekbone definition, intense locked-in eye contact with no slack expression, and the slicked-back long hair reads elegantly dancer-coded; R's shorter curly hair reads messier, mouth is slightly open giving a vacant look, and harsher flat lighting loses the facial structure L has."
      }
    },
    {
      "persona_id": "f01",
      "persona_name": "Hannah",
      "persona_gender": "female",
      "seed": 1,
      "anchor_image": "f01-seed1.png",
      "candidate_image": "f01-seed1.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's warmer directional sunlight carves better shadow definition on cheekbones and collarbone; freckles across nose-bridge are more pronounced and charming; arms-on-table framing adds natural lifestyle context vs L's flatter, more static frontal crop"
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's warm golden window light flatters her auburn hair and freckled complexion; genuine slight smile reads more engaging than R's flat neutral expression under cooler, harsher light that flattens her skin tone"
      }
    },
    {
      "persona_id": "f01",
      "persona_name": "Hannah",
      "persona_gender": "female",
      "seed": 2,
      "anchor_image": "f01-seed2.png",
      "candidate_image": "f01-seed2.png",
      "outcome": "tie",
      "confidence": "low",
      "position_bias": true,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L's warm golden window light creates luminous skin glow and makes the auburn hair richly dimensional; R's cooler flat lighting dulls both, and the outstretched arm breaks the composition awkwardly."
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's raking warm side-light sculpts visible cheekbone hollows and makes the auburn hair luminous with copper tones; R's flatter ambient light flattens facial dimension and dulls the hair color."
      }
    },
    {
      "persona_id": "f02",
      "persona_name": "Camila",
      "persona_gender": "female",
      "seed": 1,
      "anchor_image": "f02-seed1.png",
      "candidate_image": "f02-seed1.png",
      "outcome": "anchor",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L shows full athletic midriff with toned abs visible and direct forward eye contact \u2014 the two elements that make a fitness-coach profile land. R crops to bust level at a 3/4 angle, losing the body context entirely and softening the 'cocky-warm' read into something more coy and unremarkable."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R shows sharper cheekbone definition with subtle hollows, a more elongated jawline, and the full athletic torso framing exposes a visibly toned midsection \u2014 all meaningfully stronger than L's softer rounder face shape and tighter crop that hides the physique."
      }
    },
    {
      "persona_id": "f02",
      "persona_name": "Camila",
      "persona_gender": "female",
      "seed": 2,
      "anchor_image": "f02-seed2.png",
      "candidate_image": "f02-seed2.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L's fuller direct-camera smile and warmer skin-flattering lighting create stronger eye contact pull; R's visible abs add points but the cooler flat lighting and more neutral lip-closed expression read as guarded vs. L's cocky-warm energy"
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R shows sharper cheekbone definition with subtle hollows, fuller lips with a confident smirk, and tighter face-forward framing that creates more scroll-stopping impact; L's expression is flatter and face sits smaller in frame despite the midriff reveal"
      }
    },
    {
      "persona_id": "f03",
      "persona_name": "Yujin",
      "persona_gender": "female",
      "seed": 1,
      "anchor_image": "f03-seed1.png",
      "candidate_image": "f03-seed1.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's near-direct camera eye contact and tighter face crop make the large doe eyes the dominant focal point; L's off-axis gaze loses that immediate pull despite slightly warmer side-lighting"
      },
      "r2": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L has direct camera eye contact showcasing the large doe eyes fully, plus closer framing with softer diffused window light flat on skin \u2014 R's averted gaze and warmer side-lighting lose both the eye engagement and the dewy skin flattery"
      }
    },
    {
      "persona_id": "f03",
      "persona_name": "Yujin",
      "persona_gender": "female",
      "seed": 2,
      "anchor_image": "f03-seed2.png",
      "candidate_image": "f03-seed2.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L shows a more elongated oval face with cleaner jawline taper vs R's slightly rounder, fuller face; L's doe eyes read larger and more defined in frame; off-shoulder styling exposes neck-collarbone line adding visual elegance R lacks."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R shows sharper jawline definition, more luminous skin under better lighting, visible collarbone from off-shoulder drop adding feminine structure, and subtly defined eyes vs L's flatter below-angle shot that rounds the face."
      }
    },
    {
      "persona_id": "f04",
      "persona_name": "Naomi",
      "persona_gender": "female",
      "seed": 1,
      "anchor_image": "f04-seed1.png",
      "candidate_image": "f04-seed1.png",
      "outcome": "anchor",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "medium",
        "reason": "L shows sharper cheekbone definition with visible hollowing, a cleaner jawline angle, and window light that sculpts the face; R has softer, rounder facial structure and flatter lighting that reduces contrast."
      },
      "r2": {
        "winner": "R",
        "confidence": "high",
        "reason": "R has more defined cheekbone structure, a longer visible neck creating better facial proportions, and the tight curly hair adds textural visual interest that L's flat pixie cut can't match. L's jaw is softer and expression more vacant."
      }
    },
    {
      "persona_id": "f04",
      "persona_name": "Naomi",
      "persona_gender": "female",
      "seed": 2,
      "anchor_image": "f04-seed2.png",
      "candidate_image": "f04-seed2.png",
      "outcome": "candidate",
      "confidence": "medium",
      "position_bias": false,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R shows a slight warm smile and chin-rest pose that adds expressiveness; longer neck visibility and softer natural window light flatter her facial structure more than L's flat-on deadpan stare"
      },
      "r2": {
        "winner": "L",
        "confidence": "high",
        "reason": "L has warm window-light sculpting her jawline and a genuine soft smile with direct eye contact; R has flat diffuse lighting and a blank open-mouth stare that flattens her features and reads less engaging."
      }
    },
    {
      "persona_id": "f05",
      "persona_name": "Anya",
      "persona_gender": "female",
      "seed": 1,
      "anchor_image": "f05-seed1.png",
      "candidate_image": "f05-seed1.png",
      "outcome": "anchor",
      "confidence": "high",
      "position_bias": false,
      "r1": {
        "winner": "L",
        "confidence": "high",
        "reason": "L's vivid blue-green irises with direct locked gaze, light freckle dusting across nose bridge, and warm window light sculpting cheekbone definition all beat R's flatter, cooler lighting and more withdrawn expression that loses face impact."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's closer crop surfaces vivid blue irises with direct eye contact, more defined cheekbones, and fuller parted lips \u2014 L's wider frame and passive gaze dilute facial impact by comparison"
      }
    },
    {
      "persona_id": "f05",
      "persona_name": "Anya",
      "persona_gender": "female",
      "seed": 2,
      "anchor_image": "f05-seed2.png",
      "candidate_image": "f05-seed2.png",
      "outcome": "tie",
      "confidence": "low",
      "position_bias": true,
      "r1": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's frontal framing reveals more facial symmetry and visible cheek freckles that add softness; L's angled shot elongates the face and produces flatter, more vacant eye contact by comparison."
      },
      "r2": {
        "winner": "R",
        "confidence": "medium",
        "reason": "R's tighter crop brings her clear blue eyes and direct camera eye contact front-and-center, and the angle reveals sharper cheekbone definition; L's wider framing shrinks the face and her gaze drifts off-camera toward the book, losing engagement."
      }
    }
  ],
  "aggregates": {
    "samples": 46,
    "candidate_wins": 14,
    "anchor_wins": 23,
    "ties": 9,
    "win_rate_excl_ties": 0.378,
    "tie_rate": 0.196,
    "position_bias_detected": 9,
    "high_confidence_candidate_wins": 3,
    "high_confidence_anchor_wins": 10
  },
  "per_persona": {
    "m01": {
      "anchor": 0,
      "candidate": 1,
      "tie": 1,
      "bias": 1
    },
    "m02": {
      "anchor": 1,
      "candidate": 1,
      "tie": 0,
      "bias": 0
    },
    "m03": {
      "anchor": 1,
      "candidate": 1,
      "tie": 0,
      "bias": 0
    },
    "m04": {
      "anchor": 1,
      "candidate": 1,
      "tie": 0,
      "bias": 0
    },
    "m05": {
      "anchor": 0,
      "candidate": 0,
      "tie": 2,
      "bias": 2
    },
    "m06": {
      "anchor": 1,
      "candidate": 1,
      "tie": 0,
      "bias": 0
    },
    "m07": {
      "anchor": 2,
      "candidate": 0,
      "tie": 0,
      "bias": 0
    },
    "m08": {
      "anchor": 2,
      "candidate": 0,
      "tie": 0,
      "bias": 0
    },
    "m09": {
      "anchor": 1,
      "candidate": 0,
      "tie": 1,
      "bias": 1
    },
    "m10": {
      "anchor": 2,
      "candidate": 0,
      "tie": 0,
      "bias": 0
    },
    "m11": {
      "anchor": 1,
      "candidate": 1,
      "tie": 0,
      "bias": 0
    },
    "m12": {
      "anchor": 0,
      "candidate": 2,
      "tie": 0,
      "bias": 0
    },
    "m13": {
      "anchor": 2,
      "candidate": 0,
      "tie": 0,
      "bias": 0
    },
    "m14": {
      "anchor": 1,
      "candidate": 0,
      "tie": 1,
      "bias": 1
    },
    "m15": {
      "anchor": 2,
      "candidate": 0,
      "tie": 0,
      "bias": 0
    },
    "m16": {
      "anchor": 0,
      "candidate": 1,
      "tie": 1,
      "bias": 1
    },
    "m17": {
      "anchor": 1,
      "candidate": 1,
      "tie": 0,
      "bias": 0
    },
    "m18": {
      "anchor": 0,
      "candidate": 1,
      "tie": 1,
      "bias": 1
    },
    "f01": {
      "anchor": 0,
      "candidate": 1,
      "tie": 1,
      "bias": 1
    },
    "f02": {
      "anchor": 2,
      "candidate": 0,
      "tie": 0,
      "bias": 0
    },
    "f03": {
      "anchor": 1,
      "candidate": 1,
      "tie": 0,
      "bias": 0
    },
    "f04": {
      "anchor": 1,
      "candidate": 1,
      "tie": 0,
      "bias": 0
    },
    "f05": {
      "anchor": 1,
      "candidate": 0,
      "tie": 1,
      "bias": 1
    }
  }
}