Because for me chrome vs firefox (both 115)
- ubuntu desktop: 148(+-2.2) vs 126(+-6.5)
- android phone: 95.8(+-2.0) vs 78.5(+-4.3)
So it looks like chrome is faster and delivers a more stable performance while firefox is slower and more inconsistent on performance - chrome 114: 472 ± 30
- firefox 115: 390 ± 22
- firefox 117: 420 ± 12