NFL teams that rush for over 200 yards in a game are 152-35-7 ATS the last 5 seasons.
NFL teams that rush for 75 yards more than their opponent are 364-91-9 ATS the last 5 seasons if you exclude the Bears.
The trick is knowing when a team will rush for more than 200 yards or when a team will outrush their opponent by 75 yards or more.