How are these numbers calculated?

Big Games

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

Week of 8/21100.0*Average seed
Crows 131 Lions 44 -0.4
Blues 78 Demons 55 -0.2
Suns 97 Bombers 95 -0.1
Week of 8/28100.0*Average seed
Hawks 134 Lions 62 -0.3
Giants 132 Blues 51 +0.2
Week of 9/4100.0*Average seed
Hawks 113 Blues 56 +0.5
Lions 130 Bulldogs 122 +0.2
Games Above .500
Chance Will Make Playoffs