I think Sawman was making a joke. A dime is about .71" and VERY few rifles can do that at 100 yards, even fewer at 200. Hell, Ive never personally seen a sub .5 moa rifle/shooter in person and I doubt very many on this forum ever have either. No AK or any other assault rifle for that matter can get even close to that kind of accuracy!
As far accuracy goes, my AK-74s can consistently shoot 2-4MOA if I do my part. Most of my 7.62 rifles are around 5MOA with the exception of my SGL-21 (Russian AK-103) that can do around 3MOA. Off hand an AK-74 WILL shoot as well as your average M4 clone as long as the ammo is similar in quality. The problem though with these calibers is the inconsistency of the Russian ammo so its really hard to compare say an AK-74 with Russian surplus to an M4 shooting quality made US ammo, however put Russian .223 in that M4 and Russian 5.45 in the -74 and you will be surprised at how that AK-74 compares.
The AK has two other disadvantages to the AR. First and my biggest pet peeve is the mag changes, on the AK it takes longer and is cumbersome compared to the AR. The second is the rudimentary sight system, at least that can be remedied with a quality optic. Of course the AK is easier to use, clean and repair so a fair trade off. I like ARs and I like AKs but because I feel I will never be able to operate an AR to its full potential, the AK suits me just fine.