I have no idea how your KD is so good. I felt i was kicking dog last night in a game only to find out that i had 21 kills and 20 deaths. The slow animations always get me killed. If your clip runs out you're dead, if your throwing a grenade and someone walks up on you during the animation, you're dead. and these are all things i think i can do in half the time in Real life than what they allow me to do in game.
It's probably cause you're on PS4. The player count is much higher so I guess you have much less time to react to things because you are constantly seeing enemies. On PS3 there's only max 12 players on the enemy team so I guess you get a little more room to breath in between gun fights. On PS4 it's 32 players right?