User blog comment:Sosuke Aizen008/Who is the most powerful in stern ritters?/@comment-5592530-20130923210748/@comment-11051098-20130924222209

If he had hit her with the Cero he charged up, maybe. But she pretty much kicked his ass at first. He didn't even manage to lay a hand on her.

As for his strength, it was obvious that the only thing that made Yammy the 0 Espada, was his great physical strength.