I'll have 2B wiff very rarely, I guess it's because I love dem balls deep anti airs, but most of the time when my 6A is blocked, my 2B is blocked as well. In those rare events where 2B does wiff though, I still get my pressure, because my opponents are still on the defensive, while it's true that they CAN mash out, I've never had it happen where they DID mash out, it's kinda the same reason the 5A > 6B/214A mixup works, sure both can be mashed out of easily with the same shit, but no one does it because they are afraid of Noel CHing you with something else.
Though I guess I better start practicing the 6A > IAD AA due to the CS2+ Change :C