Before arguing the Pz2 is OP in war thunder, you should check whether both tanks actually perform indentically there as here. As in war thunder the Pz2 gets access to their 64mm pen HVAP round, which it doesn’t get in enlisted, it has ~30% less armor penetration here than in war thunder.
T-60 gets more shots per magazine, but can not pen the Pz2 outside of 100m frontally
Or other way around, Pz2 gets less shots per magazine, but can pen the T-60 turret frontally beyond 100m
The rest is pretty much equal between the two:
Both have a 20mm main gun and a LMG.
Neither can penetrate the other in the front hull.
Both are roughly equally mobile.
Both have roughly the same reload time.
Both have an engine/transmission on the right side that can eat some shots.
Both can easily kill each other from the side (if you dont hit the aforementioned engine/transmission).
I really do not see what is so bad about it.