During 2.2 dev, the new characters were added and they also had varied stats, but this led to a couple annoying issues, in particular Amy underwater was downright suffering. At a certain point we stepped back and asked ourselves "are the varied stats actually providing us anything overall?" and decided to test it out with everyone having Sonic's stat block (because Sonic's stat block is really the one people have been designing around for 20 years). I think it was one of the only test ideas we've ever had that had such a positive response, and therefore we decided to set everyone's stats the same.
There are other positive side-effects like letting us design around an exact stat block and knowing that characters can say, make the same jumps no matter what, but the core reason is just that we were having massive trouble with corner cases like water and just removing the stat changes was the easiest solution.
There are other positive side-effects like letting us design around an exact stat block and knowing that characters can say, make the same jumps no matter what, but the core reason is just that we were having massive trouble with corner cases like water and just removing the stat changes was the easiest solution.