What are you talking about? This is for all of us the same, I don't know how many times a striked SU-27 has turned back and unloaded his R-73's and ET's, same goes for MiG's, with R-77 vertical quick......and go...!
You should start to fly diffrent planes as well, and not only russian, then you would know much more what is going on.
I agree, in some cases, the power of hit is not enough, but again, it is for everybody the same situation, not only F-15 TANK dude!