Yeah I thought Bisping beat Sonnen, so in terms of a common opponent Bisping edged Chael while Stann was tooled by him.
But that doesn't mean much, considering that Chael's greatest strength plays right into Stann's greatest weakness. Bisping's TDD and ground game is much better, which worked for him (to an extent) against Sonnen. But Bisping likes to stand more, which will play right into Stann's hands because that's where his strengths are.
Interesting fight anyway. Good win for Stann however he can do it, solid win for Bisping if he looks good.