How are these numbers calculated?

Big Games

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

Week of 4/14100.0*Chance in playoffs100.0*Average seed
Knighthawks 14 Roughnecks 12 -0.4
Swarm 14 Stealth 9 *In
Mammoth 19 Rock 12 +0.3
Rush 11 Bandits 8 +0.1
Week of 4/20100.0*Chance in playoffs100.0*Average seed
Stealth 13 Rock 16 -0.3
Week of 4/28100.0*Chance in playoffs100.0*Average seed
Knighthawks 9 Wings 7 -1.7
Stealth 16 Bandits 17 -0.6
Rush 11 Rock 12 -0.4

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Games Above .500
Chance Will Make Playoffs