They're both cheap, they're both capable medium to long range, both have customization options to suit their purpose. I don't see what the point is of this complaint. If anything a complaint that the AKM is most undeniably a superior choice might be valid complaint.
@mainfold But the M16A2 only has access to a 3x and a 4x, whereas the A4 not only has more usable iron sights, but has the full array of optics available, including 4x scopes. Maybe if it were a full auto A1 or ironsighted C7 that had no available optics, but it's not.
I'd say it's pretty clear cut, the A4 is just better. I use the A2 for aesthetics, but I'm constantly cursing the tiny aperture I'm forced to use.
@plppln Pretty clever use of it, basically using it to get the STANAG mags in your loadout, then just picking up enemy M4's and not having to resupply to have ammo! It's one of my uses for it, and instead spending supply points on different things in the loadout.