Actually, it is like this:
Team - Total Offense - Rush Offense - Pass Offense - Total
(the lower the final number, the better)
Dallas - 7th - 14th - 9th = 30
Philly - 8th - 32nd - 1st = 41
NY Giants - 13th - 7th - 17th = 37
Washgtn - 10th - 10th - 12th = 32
Team - Total Defense - Rush Defense - Pass Defense - Total
(the lower the final number, the better)
Dallas - 5th - 7th - 12th = 24
Philly - 25th - 21nd - 25st = 71
NY Giants - 30th - 11th - 30th = 71
Washgtn - 6th - 25th - 1st = 32
Team - Offensive total - Defensive total = Grand total
Dallas: 30 + 24 = 54
Philly: 41 + 71 = 112
NY Giants: 37 + 71 = 108
Washgtn: 32 + 32 = 64