The fight wasen't on the ground that much at all. 7/10ths of the fight was standing and Hamil kicked his ass doing it. The only time Bisping looked good was when he threw punches that were blocked and/or barely touching. (Where you throw a punch and your fist just touches him)
Also on the ground, Hamil was beating him, moving him when he wanted. And Hamil repeatedly let Bisping stand up so that they could trade punches and Hamill rocked Bisping a few times.