Ads was a JOKE in MoH.

Yeah that's why it was so funny when you killed someone while ads'ing.
Also, if I were to list Mexicans that used Springy you'd be the first on the list and the only. Springys didn't compensate for lag so Mexicans don't really use them.
I had trouble with aiming autos, just couldnt handle the sights very well. I wanted to move faster then what I could manage, so hipfiring shotguns saved me time on ads/quicker kills.
Yeah I had a lot of problems using the full autos too. I never ads'd but the recoil you got hip firing pissed me off too much so i just went with shotgun.