He means in other games. He likes the pistol whip because you don't have to switch to the knife, but I would also like to be bale to hit people with the butt of my rifle.
Watching the game as a spectator I really started to appreciate how realistic the game looks. The only thing that looked pretty silly was when players ran up on eachother and do the typical CS circle strafe of death.
The pistol whip is great but the rifles should have the same option. Maybe the MG guys could kick or something. No hand to hand really makes it tough when your in close range and pulling the knife takes too long.