IS 2 problem

The is2 was made to counter tigers, panthers and king tigers. for example it could pierce the front armor of a king tiger at 800 m and the king was able to pierce the front armor of a is2 at just 500m

the is2 had a high piercing main gun so idk why in the game its a good ai and soso at it should be good at and ok ai like it historicaly was and the nickname of the is2 was the animal hunter(german tigers and panthers) some months after the deployment of the is2 on the battlefield hitler gave the direct order to all his tanks to no engage the is2 because it was 1 shoting every tank that it was facing and btw idk why it is the isu 152 that is the tank destroyer like heavy for the soviet it was made to explode position not to destroy tanks.

And a lone is2 faced 3 king tiger in southern finland and it got them all plus the king tiger had a pooor mobility so it made it a easy target. so in action eve if the king tiger have better stats like armor in action the is2 was beating all these tanks. The problem is that it have a poor at for it history and btw 3842 is2 were made and just 1300 tigers and around 462 king tiger so it should be cheaper than the tiger.

That were just real facts about the is2 and i would like to know your proposition of thing that could be adjust.