I have been debating this with my friend for a while... It always comes down to me saying if you wiggle you will bounce, and him saying tiger2 better in every way.
i think a slight armor or mobility buff might be good. (i do not have the tank yet) plz dont yell at me and say theres other tanks that need buffing, not the is3, i agree, i just think with the abundance of IS-x tanks something to give to the original might be nice.