BL3 had the 'best' guns in that I was commonly getting a legendary gun that was just like "Oh, this is a good assault rifle/shotgun". It wasn't unique or required some funky firing style. Just, a lot of decent guns.

But you could have given me an M4 from Modern Warfare and it would have done exactly the same. Just a gun where you pull the trigger and it shoots. All the 'wacky' guns were such a letdown in DPS that it was unusable.