{
  "source": "qa/chrome-iteration-2026-10-02/comparison-final.json",
  "date": "2026-10-02T01:32:15.253Z",
  "rounds": 5,
  "machine": {
    "cpu": "Apple M5",
    "cores": 10,
    "memoryGiB": 16,
    "os": "27.0.0",
    "arch": "arm64"
  },
  "metric": "fivePageRssMiB",
  "Brizo": {
    "max": 1135.7,
    "median": 1024.3,
    "min": 1015.1,
    "p95": 1135.7,
    "runs": [
      1023.2,
      1024.3,
      1135.7,
      1015.1,
      1111.8
    ]
  },
  "Chrome": {
    "max": 1806,
    "median": 1804.4,
    "min": 1604.9,
    "p95": 1806,
    "runs": [
      1804.4,
      1805.2,
      1803.9,
      1604.9,
      1806
    ]
  },
  "limitations": [
    "Real Brizo shell remains hidden; Chrome is headless. FCP/LCP and normal foreground GPU interaction are not comparable and are excluded from superiority claims.",
    "Fresh independent profiles and processes, warm OS file caches. Local HTML is no-store. Only the cache fixture assets have identical HTTP caching.",
    "New-tab wall time includes different host/CDP setup and polling overhead; navigation load/DCL measures the document, not creation of an equivalent user-visible tab.",
    "RSS sums descendant processes and can double-count shared pages. CPU uses five-second ps process-tree deltas, with quantization; zero is a sampling floor.",
    "Five rounds are directional, not population p95. Intelligence and security do not have a meaningful overall percentage score.",
    "No user window/profile/keychain was operated. This is not an installed-package or real Internet ranking."
  ]
}