That's for determining who the wild card teams are. The seeding is based on all-play. Here's the latest rule:
http://predsff.com/forums/showthread.php?t=34407
Seeding for Wild Card Teams will be as follows
All-Play Record
Overall Record
H2H (see note in link above)
Overall Points Scored
Defensive Points Scored
Offensive Points Scored
Random.org dice roll