Board Thread:Questions and Answers/@comment-10922879-20130617143901/@comment-4161952-20130623220704

We never really got to see the power of Yammy's Ira release because Kubo didn't show that part of his fight with Kenpachi and Byakuya. We can only assume the power because it took two strong Captains to take him down. They came back injured but alive.

I think the strongest Espada was Barragan. Barragan and Starkk have haxy abilities but Barragan's is haxier. Respira will catch any Espada and they won't be able to attack him because he will just age the attack and prevent it from hitting him.