How are these numbers calculated?

Big Games

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

Week of 4/6100.0*Chance in playoffs100.0*Average seed
Wings 15 Swarm 13 +13.8
+0.6
Knighthawks 14 Wings 7 -6.3
-0.6
Rush 7 Mammoth 9 -5.5
-0.2
Swarm 21 Bandits 7 +4.0
+0.0
Rock 10 Knighthawks 9 -0.1
Roughnecks 11 Stealth 12 -0.1
Week of 4/13100.0*Chance in playoffs100.0*Average seed
Stealth 10 Bandits 15 -6.0
-0.1
Wings 10 Rock 9 In
+0.6
Mammoth 12 Swarm 17 +1.5
Roughnecks 14 Knighthawks 15 -0.1
Week of 4/20100.0*Chance in playoffs100.0*Average seed
Stealth 17 Wings 13 -0.4
Bandits 9 Knighthawks 10 -0.2
Swarm 14 Mammoth 16 +0.2
Rush 11 Roughnecks 12 +0.1
Games Above .500
Chance Will Make Playoffs