Board Thread:Questions and Answers/@comment-5239435-20130422175359/@comment-4161952-20130423004938

Now how powerful is this person with a 6th sense? You're trying to say he would be completely helpless if someone who were somehow able to counter Kyoka Suigetsu. Aizen has compete mastery of all the Shinigami skills. He also had the influence of the Hogyoku, nobody could've stopped him except Ichigo and Urahara's seal.