| Metric | RSS | Twenty Fifteen | Winner |
|---|---|---|---|
| Performance | 49 | 61 | Twenty Fifteen |
| Accessibility | 88 | 80 | RSS |
| Best Practices | 89 | 96 | Twenty Fifteen |
| SEO | 92 | 92 | Tie |
| Security | 65 | 62 | RSS |
| TTFB | 273ms | 79ms | Twenty Fifteen |
| Composite | 74 | 80 | Twenty Fifteen |
Twenty Fifteen outperforms RSS in 4 of 7 categories, with a stronger composite score (80 vs 74). RSS leads in accessibility, security.
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