Based on 2813 and 75 real audits
| Metric | Google Tag Manager | MobX | Winner |
|---|---|---|---|
| Performance | 41 | 35 | Google Tag Manager |
| Accessibility | 88 | 83 | Google Tag Manager |
| Best Practices | 87 | 82 | Google Tag Manager |
| SEO | 91 | 88 | Google Tag Manager |
| Security | 66 | 66 | Tie |
| TTFB | 407ms | 282ms | MobX |
| Composite | 74 | 72 | Google Tag Manager |
Google Tag Manager outperforms MobX in 5 of 7 categories, with a stronger composite score (74 vs 72). MobX leads in TTFB.
Choose Google Tag Manager when your primary concern is performance and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Choose MobX when your primary concern is server response time. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 2813 audited Google Tag Manager sites and 75 audited MobX 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 →
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