They won't nerf one of the main weapon groups so far in if there still around, I think auto shotguns should have the same clip size, accuracy, etc. but are automatic. Since they are heavy only weapons (now) i could live with higher damage.
Or they could go the easy MW2 way and nerf auto shotties with low ammo and low clip size, actually a pretty good balancing method imo
They definately should not have the same accuracy and clip size. MW2 barely nerfed them at all, just equip Sleight of Hand Pro and you can go til you run out of ammo. You can shoot people from 20 feet away with an auto shotgun. If theyr going to nerf them, at least reduce their accuracy, distance, and damage. It doesnt matter if their heavy, and clip size isnt a big factor IMO, but accuracy and distance ARE.