Well if the guns wouldn't be so "weak" it would be quite unbalanced. And I think it's good because it gives and advantage to those who actually aim for the head. Headshot = Instant Kill and that's how it should be.
nah i disagree.. because spamming with an SMG or AR with a 1 hit KO to the head aint good in my opinion, im quite happy with a 2 hit kill to the head close enough