I own both but if you take care of it, keep it clean, and need accuracy the M-16 wins IMO.
If you want something that works in the mud and you are not shooting past 100 meters the AK is a great choice. I prefer the machined AK variants over the stamped ones and you get more accuracy out of them.
If you gave me 100 low skill soldiers I would choose to equip them with the AK. If you gave me a highly trained rifle squad I would choose the M-16.
That sounds right.
Also, that accounts for 10:1 kill ratios. Good soldiers vs. cannon fodder with spray n’ pray.