How are these numbers calculated?

Big Games

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

Week of 8/15100.0*Top 4100.0*Average seed
Blues 76 Cats 82 -0.1
Week of 8/22100.0*Top 4100.0*Average seed
Hawks 94 Cats 71 Yes
+0.8
Power 140 Blues 37 -2.0
-0.1
Bulldogs 67 Swans 130 -0.3
Lions 48 Dockers 106 -0.1
Week of 8/29100.0*Top 4100.0*Average seed
Magpies 56 Hawks 121 +0.7
Swans 65 Tigers 68 +0.5
Games Above .500  (Full Screen)
Chance Will Make Playoffs  (Full Screen)