Too me there is a big difference. Yes, people camp in BF4 too, especially with a sniper. But not as much as on COD imo. And I even have some issues with TTK/hit detection but still enjoy it more. I get bored real fast on COD as it`s very repetative.
As mentioned, it takes hell of a lot more skill to kill with snipers, so QS doesn`t exist. A camper in a house? Bring the house down on him.
I adjusted by stop playing it.