T110E5: is it OP?

Ectar:   In the specific situation I described, yes. I'm not saying it all other situations they play the same. I didn't compare their mobility, rate of fire, traverse, power to weight etc. In most top tier games you're going to find the T110E5 and Maus in similar locations where the heavies meet. As the battle develops the better mobility of the E5 allows it more freedom to roam.