KV1 had the same gun as T34/76 and couldn't take on the heavies...same with the Churchill. you can get a KV85 with AP rounds and then maybe...but once again...what's the point when you can get the T34/85Similar with the T34/57...(its not a prototype btw about 250 where built and used)...why have it when you have the T34/85 upgrade which does the dame thing but even better plus the SUs which are tank hunters