A fast pace offense can win championships. A lot of teams have a fast-paced offense, so I think you should clarify, "fast pace." In March, when everything counts, you have to play the half-court well. It will either be for defensive purposes because a lot of teams thrive in the half-court, like OSU or Duke or many others. Or, it may be because of offensive purposes because controlling the ball controls the clock. Teams that are more talented or athletic may thrive with their fast pace offense like a Kansas or UK or many others again.