oh, thought I saw someone comment on medium tanks vs heavy armor... now I can't find it looking back at the thread
Yes, it's a good point to talk about medium tanks.
I think tank battle system should be reworked, maybe increasing HP on heavier tanks but decreasing armor. The fuel and mp cost to get a Panzer 4 is almost the same as to get an IS-2. With the difference that you can build 4xPanzer 4 and the IS-2 will still rape them all. (As soviets, you can deal with T3 with AT guns and mines until your heavy tanks comes).
About this video, is not a bug, It happened before with 2 tigers + pak + p4 in Semoiskaya vs 2 iS-2 and it was a pain.