Abrahms tanks don't actually blow up in real life, there's also 0% chance an RPG would get through its' depleted uranium shell, but it does for the sake of game balance.
War in real life isn't balanced. Video games HAVE to be or else it wouldn't be fun.
All I'm saying is if you want 100% REAL LIFE SNIPING this game is not for you, and you should not buy it. Go play Ghost Sniper or ARMA 2.