{
  "comparison_status": "descriptive_frozen_v1_vs_separate_v1_1_replication",
  "generated_date": "2026-07-28",
  "interpretation": "Unweighted descriptive comparison only. The samples differ in dealer, platform, and source-frame composition; percentage-point differences are not causal effects or statistical estimates of the US dealership industry.",
  "v1": {
    "sample_size": 108,
    "dealer_domains": 9,
    "states": 8,
    "platform_families": 2,
    "mean_score_0_to_12": 7.79,
    "median_score_0_to_12": 8
  },
  "v1_1_replication": {
    "source_frame_size": 122,
    "included_sample_size": 111,
    "excluded_source_count": 11,
    "dealer_domains": 17,
    "states": 11,
    "platform_families": 7,
    "mean_score_0_to_12": 8.14,
    "median_score_0_to_12": 8
  },
  "total_score_difference_replication_minus_v1": {
    "mean_points": 0.35,
    "median_points": 0
  },
  "dimension_full_pass_comparison": {
    "hero_image": {
      "v1_percent": 17.6,
      "v1_1_replication_percent": 25.2,
      "percentage_point_difference_replication_minus_v1": 7.6
    },
    "gallery_completeness": {
      "v1_percent": 76.9,
      "v1_1_replication_percent": 84.7,
      "percentage_point_difference_replication_minus_v1": 7.8
    },
    "condition_proof": {
      "v1_percent": 39.8,
      "v1_1_replication_percent": 51.4,
      "percentage_point_difference_replication_minus_v1": 11.6
    },
    "background_consistency": {
      "v1_percent": 20.4,
      "v1_1_replication_percent": 35.1,
      "percentage_point_difference_replication_minus_v1": 14.7
    },
    "mobile_crop": {
      "v1_percent": 50,
      "v1_1_replication_percent": 46.8,
      "percentage_point_difference_replication_minus_v1": -3.2
    },
    "visible_edit_safety": {
      "v1_percent": 50.9,
      "v1_1_replication_percent": 46.8,
      "percentage_point_difference_replication_minus_v1": -4.1
    }
  },
  "qa_sensitivity_comparison": {
    "v1": {
      "rows": 12,
      "exact_agreement_percent": 40,
      "within_one_point_percent": 85,
      "mean_absolute_difference_0_to_2": 0.75
    },
    "v1_1_replication": {
      "rows": 14,
      "platforms_represented": 7,
      "exact_agreement_percent": 38.6,
      "within_one_point_percent": 90,
      "mean_absolute_difference_0_to_2": 0.71
    }
  },
  "warnings": [
    "Do not pool the two releases without defining and publishing a new weighting plan.",
    "Do not interpret cross-sample differences as platform effects because dealer and vehicle composition also changed.",
    "Model-assisted visual scores remain reviewer-sensitive in both releases."
  ]
}