User blog comment:Xilinoc/Ch. 542 - THE BLADE IS ME/@comment-6963992-20130619215045/@comment-5681812-20130621062238

I agree. In the Dangai training, he managed to merge his hollow and zanpakutou abilities and that is why he became that powerful. I'm guessing that with fake Zangetsu not holding him back, he will be much stronger than he was while fighting Aizen but with some traces of fullbring and Quincy abilities.