The main problem with all posts I read are people learned to use the same tactic over-and-over and now that tactic sucks against Soviets.
Thats probably what the Germans said in 1945
The IS 2's 122mm main gun could penetrate a panthers front armor, go through the engine block, and penetrate the rear armor in one shot at a distance of 1500m (November 1943 field test at Kubinka proving grounds[near Moscow]). To all those who say the IS 2 had a shitty tank v tank gun, look up your facts.