Ok, as this is getting ridiculous now, so I'm going to mention the following things and close the subject.
1) We have no IS3 model and have no current plans to make one
2)In case we did get hold of one, for one reason or another, it would be a better IS2 or a sexier Tiger1, but would still loose to a KT/Jagdpanther in a 1v1 fight. Because these are the German super tanks, the big bad wolves where you have to go the extra heroic mile to kill them...like killing the big bad boss at the end of a Half Life level. Anything else facing the IS3 would feel as weak as when you face a KT.
That's it, end of story
3)Super tanks are generally a bad idea and a pain to balance. If everyone has a couple then it stops it being a novelty any more. by super tanks I mean anything better than a Tiger1/Pershing
4) The above would happen, because I decide what the stats will be for soviet vehicles and reward units
