Look buddy, there are probably a few dozen play styles to playing Blops 2, I can symphaize with your anger at quick scoping since it is entirely un realistic, but then again this game was never really designed to be realistic. A knife in the foot kills, a .50 caliber sniper bullet in the stomach doesnt, in reality getting shot even once would pretty much disable you but in this series of games and as in any other, you heal yourself and continue on.
I can predict what the answers will be like in this thread, about 50% will be calling for it be nerfed and agree on reporting and about 50% will call it a legitimate way to play. Again I feel your pain, I don't like being QS'ed or even Drop Shotted/Corner Camped but you will be a better player if you can overcome these different strategies.
Take it easy,
Quickscoping is bloody annoying but not cheating.....what annoys me is if you are shooting someone at the same time they are shooting you ...you have the bullet impacts which can sent your gun off center....thats fine....but when im running a round of bullets into a sniper who is looking down his scope and doesn't even flinch THATS FKIN ANNOYING .....this needs to fixed...