User blog comment:Godisme/THE STAIRWAY TO HEAVEN/@comment-387500-20121121183418/@comment-1904799-20121122035240

Keep in mind that Kenpachi was stated to be in just as bad a state as Byakuya, but he wasn't taken by Senshumaru in one of the spheres. I'm not sure being "sphere-worthy" really designates having the most grievous injuries.