I have Aimpoints on both AR's and AK's, and they shoot very similarly. Ive shot both out to 300 yards, and there wasnt a whole lot of difference in the hits on the targets.
As far as your AK accuracy concerns, this was shot with my "cheap" Century SAR1 at 200 yards using its "slightly" canted iron sights. All my other "foreign" made AK's shoot about the same. My US made guns didnt.
That lower group was shot from a rest to confirm zero, the upper from a cross legged sitting at a steady cadence. Just for reference if you cant read the rule, the head on that target is 6" across.
Again, its not what costs what, its what you get out of the package.