The scorecard
From the July 2026 index run (307 domains, quick-audit engine, four equally reported categories). planetscale.com: performance 100, SEO 80, accessibility 100, security 67 — overall 91, with exactly two recorded issues. google.com: performance 100, SEO 20, accessibility 67, security 33 — overall 39, with seven recorded issues. The 52-point overall gap decomposes into a 60-point SEO gap, a 33-point accessibility gap, and a 34-point security gap. Performance contributes nothing: both pages are fast, and both score 100.
Where the gap comes from: SEO, 80 to 20
The SEO category is the whole story, and google.com's homepage fails it on basics that machines depend on. The audit recorded seven issues: a title of 6 characters, far below the 10-to-65-character guidance; no H1 heading found anywhere on the page; no canonical link; sparse OpenGraph tags; a missing viewport meta tag; and, on the security side, neither Strict-Transport-Security nor Content-Security-Policy. None of these affect a human who typed google.com into an address bar, which is precisely the point: this is a page built for people who already know what it is, and it carries almost none of the metadata a crawler, an agent, or a social preview uses to understand a page it has never seen.
The other three categories
Performance is a tie at 100 because both pages are genuinely fast in the lab; speed is not the differentiator. Accessibility separates them 100 to 67: planetscale ships the semantic structure assistive technology and parsers rely on, while google.com's sparse markup — no H1, no viewport declaration — costs it here as well as in SEO. Security separates them 67 to 33: both sites omit Strict-Transport-Security, but google.com also omits Content-Security-Policy, a second flagship header, which compounds the difference.
What planetscale gets right
PlanetScale sells to developers, and its marketing site is built to be read by everything, not just humans: a present and correctly sized heading structure, canonical URLs, complete social metadata, a viewport declaration, and descriptive titles. Its only recorded misses are a title of 89 characters, over the 65-character guidance, and the missing Strict-Transport-Security header. That is the profile of the top of the index in miniature — not exotic engineering, just the fundamentals done completely.
What this audit does not capture
Fairness requires stating the limits. google.com the homepage is not Google the search product, and this audit says nothing about the quality of Google's services. The numbers are lab data from a controlled single-page fetch, not field data from real users, and one page is not a crawl of the domain. Scores also drift between runs as pages change: an earlier index run scored google.com 37 — the figure still quoted on the landing page — while this run scores it 39. We report 39 here and flag the drift rather than smooth it over.
The pattern across the index
The teardown generalizes. The top of the July 2026 index is dominated by developer-tool and infrastructure companies — planetscale.com 91, lovable.dev 89, harvard.edu 88, circleci 86, x.com 86, cloudflare 85, discord 85 — while the bottom is dominated by large consumer and finance properties: google.com 39, amazon.com 39, oracle.com 39, facebook.com 38, weather.gov 36, meta.ai 34, crates.io 29, glossier.com 27, binance.com 24. The index average is 59 and the median 58. The most common failures across all 307 domains are unglamorous: images missing alt text on 184 domains, missing Content-Security-Policy on 151, heavy HTML payloads on 147, slow server response on 122, excessive external scripts on 103, missing canonical links on 102, no H1 on 93, sparse OpenGraph on 84, title-length violations on 81, and missing meta descriptions on 70. google.com's issue list is the index's greatest hits, not an anomaly.
The takeaway
Every issue in this teardown is fixable in an afternoon: a canonical link, an H1, a viewport meta tag, complete OpenGraph tags, a descriptive title, and two response headers. That is the point of the index. The leaderboard at /reports is public and re-audited regularly, every report is HMAC-signed and independently verifiable at /verify, and any domain can run the same free audit to see its own scorecard before the next index run does. The next teardown in this series will apply the same format to another pair from the table.