Lest people forget, the standard infantry rifle/carbine is only as good as training, tactics, and support that the users bring to the table.
The m16 has better sights, lighter ammo, better safety/selector, and better long range ballistics.
The AK has better reliability in harsh conditions.
If the Soviets had worked to improve the AK as much as the US worked to improve the m16, then we would probably be asking which is better, such as a Galil or VZ-58 or an m16.
But it is not the weapon that is the determining factor, it is the wielder.
Jimro