User blog comment:GinIchimaru/Gin in context./@comment-1706259-20100901134748

All very interesting thoughts honestly.

1) I don't think Gin thought he was stronger than Aizen; but just that if he could negate KS or use a surprise attack, he would be able to take him out.

2) a) I think Gin just cleared his heart (somehow). b) Gin probably did fight Ichigo to test and train him since he knew Ichigo was planning on fighting Aizen, and in the off-chance (in Gin's head) that he died, someone was there to give it a shot. c) Gin got annoyed because he didn't want to think of Aizen turning on him or killing him.

3) It seems to be that Gin really was unaware of Aizen's actions until that point.