You are comparing a medium tank with a super heavy late game tank.
Good luck with that.
And dont run infantry in the radius of the Isu, thats like asking for a wipe.
Also, it doesnt consequently wipe squads anymore as it did.
i actually think , that the isu is fine, but the squadAI is not. those wipes often occur, because your units were running bunched up. change this and its perfect