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*Top 4100.0*Average seed
Eagles 162 Bulldogs 85 Yes
+0.7
Giants 44 Swans 133 -1.7
-0.1
Crows 131 Lions 44 -1.1
Hawks 86 Power 108 +0.8
+0.2
Magpies 56 Tigers 147 -0.6
Kangaroos 94 Dockers 83 -0.5
+0.1
Week of 8/28100.0*Top 4100.0*Average seed
Crows 126 Eagles 69 -0.4
Dockers 108 Demons 54 -0.1
Hawks 134 Lions 62 -0.1
Saints 38 Swans 135 -0.1
Week of 9/4100.0*Top 4100.0*Average seed
Eagles 125 Saints 30 +0.5
Hawks 113 Blues 56 -0.3
Swans 127 Suns 64 -0.3
Games Above .500
Chance Will Make Playoffs