Usually, for whatever reason, the running stat that counts the most is attempts. This stat pretty much holds true most of the time.

Examples of this seasons rushing attempts:

Week 1 - Redskins 43 Saints 10
Week 2 - Panthers 41 Saints 27
Week 3 - Chiefs 45 Saints 19
Week 4 - Packers 25 Saints 19
Week 5 - Saints 21 Chargers 18

Doesn't always work out that the team with the most rushing attempts wins the game, but historically, it is a very decent indicator.