Based on 2882 and 15 real audits
| Metric | Google Tag Manager | Yahoo Advertising | Winner |
|---|---|---|---|
| Performance | 41 | 29 | Google Tag Manager |
| Accessibility | 88 | 82 | Google Tag Manager |
| Best Practices | 87 | 76 | Google Tag Manager |
| SEO | 92 | 92 | Tie |
| Security | 66 | 60 | Google Tag Manager |
| TTFB | 415ms | 793ms | Google Tag Manager |
| Composite | 74 | 69 | Google Tag Manager |
Google Tag Manager outperforms Yahoo Advertising in 6 of 7 categories, with a stronger composite score (74 vs 69). Yahoo Advertising leads in no categories.
Choose Google Tag Manager when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.
Yahoo Advertising doesn't clearly lead Google Tag Manager in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.
Scores are medians across 2882 audited Google Tag Manager sites and 15 audited Yahoo Advertising sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →
Send Feedback