Blame and credit World of Tanks.
I've been running the American line of tank destroyers and have noticed that the IS-2 is a tough nut to crack and the KV-1s seem overpowered for their tiers. We won't even get into the Tiger and King Tiger side of the equation, so I wanted to do some light reading on how they performed in combat.
The game's designers are Russian so that I thought they were biased toward Soviet vehicles (or maybe its my American nationalism peeking through) but after reading a few things it seems they are playing it pretty straight.
The above pdf just scratches the surface with information on the two vehicles but it gives a nice, quick overview of things. Check it out.
