This unexpected edge could be difference-maker for Cowboys vs. Bucs

DVOA is a metric which measures the success of each play as compared to league average using percentage points above or below average. The metric measures down, distance, field location, quarter and quality of opponent.

With DVOA, teams are looking for a higher percentage offensively and a lower percentage defensively.  On offense and special teams, the objective is to perform above league average while defenses are looking to force their opponents to perform below league average. Information via Football Outsiders.