It's a cool stat. Tells us that we did what we wanted. Why do we want to run an up-tempo offense? We have a stifling defense and we were playing an outmanned team. We wanted to control the clock and we did. What drives this stat is not only speed of the offense, but time of possession. If we hold the ball and continue to drive, we keep our defense rested and their offense off the field. The best defense is a great offense. That means, if the other team doesn't have the ball, they can't score.