User blog comment:Nick D Wolfwood/inconsistencies in the world of Bleach/@comment-1351982-20100701175637

I think Keigo might have more of a resistance to high reiatsu, because he has been more in contact with high spiritual beings than Tatsuki. He made contact with Zennosuke Kurumadani, Ichigo, Rukia and company, he was in proximity when Ikkaku released his bankai, plus he also faced Edrad. So, I think he has more of an immunity to it, so I think that's the answer to that question.