Until the other cloud Ninjas came out, Ay has never been a serious threat, more of a pain in the ass, I've never really had too much of a tough time beating Raikage teams even with semi-basic Ninjas, power and initiative certainly helps.

Most Super Rare characters are not as scary as you expect when they're the only really rare character on the team. It's just that people who tend to have those characters tend have alot higher power, but generally no, it's a hassle but far from unbeatable.

I do think though with 3rd Raikage & Samui, Ay is going to be alot harder to deal with, which is a good thing as frankly I thought he was pretty average compared to other kage ninja, Mei & Sasuke would have made more sense being Kage Super Rares than Ay.