User blog comment:Xilinoc/Ch. 540 - The Sword Five/@comment-8669536-20130605182414/@comment-4026406-20130605183035

I don't think he actually defeated any real hollows after he gained his new powers/sword. He did do it once right after the Fullbring Arc, but he was using the powers he stole from Rukia at the beginning of the manga. He's been fighting shinigami, arrancar, and now Quincies with Zangetsu.