No? How about 1 hitting everyone all the time, is that good enough?
No, a headshot is a headshot and if you're not wearing a decent helm, well, sorry, ur ded.  Otherwise, 50% health.
But for light armour, 2 shots.  Med armour 3.  Plate - well, then maybe 4 and only with a longbow.  
From what I understand, in the past it was 1-shot hell.  That's unbalanced in the wrong direction for sure.  
