On the camping quote... my opinion, in real war NO ONE just runs around and gets shot, they slowly and tactically, enter and clear rooms and or wait (aka camping) until there enemy comes into view.
Now I know this is a "game" but hell if I can hold down my fort and your just gonna try and run through it, I am going to let you and kill you.
Also anyone who is using a sniper rifle in this game IMO is more than allowed to sit in one location as long as he wishes.
Either way I own a ps3 but have never played FPS on a console, I use a PC with a mouse and keyboard for that, until I get something that equals that for a console I will stick to pc's for FPS.