User blog comment:QueensT1998/Could Ulqiorra beat Stark/@comment-1604252-20120914070556

We'll never really know since they never fought each-other. I will agree with Godisme though. Starrk was the the second most powerful behind Yammy, and Ulquiorra was ranked 4th, but if you really want to get speculative about it, I would guess Ulquiorra since he did have a second ressureccion and we were, at the time, led to believe that Aizen had not yet seen it and thus had no knowledge of it. Again, just speculation. I guess it's one of those things that's left to the reader to decide.