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
Rock 8 Bandits 13 +14.0
+0.7
Swarm 17 Bandits 16 -13.1
-0.6
Stealth 15 Roughnecks 11 +3.3
Mammoth 13 Knighthawks 7 +2.7
+0.1
Rush 12 Black Wolves 13 -1.2
-0.1
Week of 4/22100.0*Chance in playoffs100.0*Average seed
Bandits 7 Swarm 20 -17.0
-0.7
Stealth 13 Mammoth 7 -5.5
-0.2
Rush 15 Rock 10 +4.1
+0.1
Knighthawks 15 Black Wolves 13 -3.5
-0.2
Week of 4/28100.0*Chance in playoffs100.0*Average seed
Bandits 15 Rock 19 -0.3
Swarm 8 Knighthawks 9 -0.3
Knighthawks 10 Swarm 13 +0.1
Games Above .500
Chance Will Make Playoffs