This is a fair point, though it is possible for app-level things that the browsers do to regress performance from the baseline pure engine level. In this case,

This is a fair point, though it is possible for app-level things that the browsers do to regress performance from the baseline pure engine level. In this case, I think the 3 score must be either very old/low-end Android hardware or a measurement error. I don’t think any iOS browser gets 3.x scores, on even remotely modern hardware.