User blog comment:Prophet of Sanghelios/Wild and Exciting Speculations!! Part 1!!!/@comment-452405-20100328224828

I'm not to sure about him being uber strong like Aizen's level (otherwise he wouldn't have to stab him in the back) but I think that in one of the next arc's Tite Kubo might try implementing his relationship with Matsumoto, maybe he made a promise to her and is trying everything to fulfill it.

The way he looked so sad when he left SS as he spoke to Matsumoto means to me that their relationship is going to have to be expanded upon as there hasn't been any real explanation as to what their feelings are for each other.