Peyton's defense > Rose's crossover(s) > the finish
Rose threw a good amount moves at him and he didn't get any separation until the "contact" and thew up shot.
A good amount of moves?
It was two moves: a set up cross over to gauge him and then the in and out crossover to the drive to which he read Peyton's momentum perfectly.
This isn't me knocking Peyton because he did a damn good job not biting, but I expect that from him considering I've watched him play NBA level (grabbing, pushing, hand checking, real physical) defense at Louisville for the past 4 years. He's always been very fast, quick, and a pest on defense, if you watch CBB you know that's what Pitino teaches.