User blog comment:Xilinoc/Ch. 570 (I can't think of a witty title at 11 pm)/@comment-4620155-20140226095721/@comment-1747976-20140303070748

It always boils down to reiatsu. Like Aizen said. So it froze him a little but then, that IS Byakuya Kuchiki we are talking about...lest we forget.