User blog comment:Zwann/Vasto Lordes in the Espada, let's analyze./@comment-1590714-20091018184409

I disagree. The fact that Vasto Lordes are supposed to be stronger than a captain, well, that's probiably true. But I still don't think Yamamoto should have to use a Bankai, he would just have to try a little harder, even against a Vasto Lorde, because in the beginning of the series he wanted to take to of the strongest captains on by himself. That just indicates he has to be outworldly strong. And even a Vasto Lorde wouldn't beat him. Also, Yamamoto is said to be equally as strong as Aizen. And if a Vasto Lorde could beat Yamamoto, then he could also beat Aizen. And Aizen is not crazy enough to recruit a Hollow stronger than himself.