User blog comment:Xilinoc/Ch. 575 - THE KILLERS HIGH/@comment-24153155-20140404002617/@comment-8669536-20140405175800

That was mostly primary logic and simple dedution in my opinion. It was more reflexes than intelligence that made it so he could win. Saying he is stupid is maybe not exectly true, but he's more stupid than most other characters in Bleach. Saying he's intelligent would be overestimating him.