leaving aside all the hisrotical accuracy
should the KT have the same AI as a single p4 ?
when u could buy 2 p4 for the price and have much better AI ?
Yes, it should.
Because you're having more then twice the durability due to armor and AT that allows you to bitchslap heavy tanks without much of a fuss and are taxed only half the micro needed as you're controlling 1 instead of 2 vehicles.
If you need AI vehicle, don't pick KT.
Unless you're trying to say that IS-2 needs its AI to be improved by additional 150%(its price compared to T34 price) and so on. You get the idea?