>>419077826
In servers with a wide variety of player latency the DPS difference between the two rifles becomes very blurred. In those situations I'd rather have 1 hit headshots to secure the kill and (anecdotally) take less trade damage.
The consistency of the M4 really shines when you prefire angles, something that might become an essential skill when the attacking team has to use Nato weapons next patch. Pushing against preaimed AKs is going to be a challenge.