You have no slightest idea what you are talking about here.
And if you are serious, you should be constantly spamming forums for KT nerfs first because allied AT is weaker and KT got more armor and health, the only disadvantage, speed is completely nullified by vet1 and it completely obliterates armor and infantry in much shorter and more reliable matter then tiger and IS-2 and panther put together.
If you expect to stop IS-2 with a single source of AT you are equally naive as allies expecting to stop tiger with single jackson or SU-85.
No tittitof you are wrong. Lets recap the su85 has 60 % chance of penetrating a tiger 53% for the jackson. the panther on the other hand has a penetration value of 70 % against the is2. But that doesnt make them better AT. as both the jackson has 50 % of the damage output of a single panther. second part they are way cheaper. you can easily have 2 jacksons/su85 for every panther. so in short the tiger is going to face 3 times more dps then an is 2. its time the is2 armour get brought down to 300 along the same line as the tiger.
Recap : the su in its current state have the following advantages over the: they have better infantry, better support weapons , better medium tanks , better heavy tanks and better teching.
The only pro's for the ostheer is that they have better handheld AT and each BP has a a selction of AT and AI.