Well I mean this is sample size 1. Not possible to say how much the test results were affected by the phones not landing exactly the same way. Maybe one was weakened by an unlucky early drop and then shattered faster? From this, I would not generally infer that one is “better” than the other. But it is still plausible
Replaceable batteries are coming to the EU in general, at least for portable devices, via the EU Batteries Regulation, which is in force already and requires all portable batteries to be easily removable and replaceable by the end user from 2027