User blog comment:TehAccelerator/Kenpachi vs Female Ritters/@comment-2211792-20140514091930/@comment-1268838-20140515221538

Well, for one thing, we know that Sasakibe's Bankai was not at full power in Driscoll's hands. That, and it was Yama-freaking-moto that he was fighting against. There should not be any surprise there.

Kenpachi just got finished fighting against Gremmy, who seemed to live up to his claim of being the strongest Sternritter. He took more damage in that fight than he ever did throughout the whole series. I mean, hell, he was basically thrown into outer space. I don't have any trouble believing that two captain-level (or higher) opponents could knock him down after that kind of beating.