Plenty of people camp in COD. Getting close to that chopper gunner? Ehhhhh, can't risk losing that by running around...just gonna watch over this traffic area till a bad guy comes by.
Or half the team on every round of S&D.
BF3 is going to be faster paced than previous Battlefield games. Sprint speed is faster. Like Medal of Honor, if anyone played that.
At least on BF, when some clown is camped next to a tree sniping from across the map, they have to headshot you to get a one hit kill. Otherwise you get hit and get the fuck outta there and they have to find someone else to shoot. Factor in the bullet drop, and that ain't something that someone quickscoping with an Intervention could ever do from the same distance in MW2 could do. So campers don't worry me too much in BF. People camping in the corner of a room near an objective? COD, BF, Counterstrike, or pretty much any other FPS will have that.