@katanalauncher: maybe not. But you've gotta remember that each and every S class hero was stated to be equal to a whole countries military might.
@luthluth: no problem, lol. I think maybe Zombieman could hold off Kenpachi until he wears him out and finish him off.
Very true, however when you think about it, many of the Captains are that strong, In some cases stronger, like Yama or Aizen if he were in this. Ken too but in his sealed state probably not. He's just a tank. And Megalzald (or whatever his name was, he was Boros' underling) required 4 S Class heroes to beat him iirc. Boros should have soloed the S Class heroes perhaps excluding #1 who is unknown.