How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 4/14100.0*Average seed
Mammoth 19 Rock 12 -0.4
Rush 11 Bandits 8 +0.1
Week of 4/20100.0*Average seed
Stealth 13 Rock 16 +0.5
Week of 4/28100.0*Average seed
Knighthawks 9 Wings 7 +0.4
Rush 11 Rock 12 +0.4
Games Above .500
Chance Will Make Playoffs