| Metric | Bootstrap | D3 | Winner |
|---|---|---|---|
| Performance | 45 | 43 | Bootstrap |
| Accessibility | 87 | 82 | Bootstrap |
| Best Practices | 88 | 87 | Bootstrap |
| SEO | 90 | 90 | Tie |
| Security | 64 | 67 | D3 |
| TTFB | 424ms | 298ms | D3 |
| Composite | 73 | 73 | Tie |
Bootstrap outperforms D3 in 3 of 7 categories, with a stronger composite score (73 vs 73). D3 leads in security, TTFB.
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