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
Suns 97 Bombers 95 -0.5
Crows 131 Lions 44 +0.1
Saints 97 Cats 97 -0.0
Week of 8/28100.0*Average seed
Bombers 47 Tigers 74 -0.5
Suns 51 Power 88 +0.2
Giants 132 Blues 51 +0.1
Dockers 108 Demons 54 +0.1
Hawks 134 Lions 62 +0.1
Week of 9/4100.0*Average seed
Swans 127 Suns 64 +0.3
Magpies 92 Bombers 95 +0.2
Demons 103 Giants 77 -0.2
Hawks 113 Blues 56 +0.1
Games Above .500
Chance Will Make Playoffs