As said before: I think that people overestimate the effect the PTAB will have in the game. Most players are accurate enough to kill GV:s with 250/500 lbs bombs so PTAB will not add anything to them. The IL-2 will be a bit more effective than w the 4x100 kg bombs but the drawbacks are that a GV hiding in the trees cannot be killed by PTAB munitions, it would require a direct hit on top of the tank to kill it and a tree will detonate the bombs before they hit the tank.