How are these numbers calculated?

Big Games

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

Week of 2/11100.0*Chance in playoffs100.0*Average seed
Wimpy Ducks 5 Eigenskates 2 -1.6
-0.3
Footless Flyers 2 Puck Me Daddy 9 -1.5
+0.1
Book Hockey 8 Team Else's 2 Out
Puck Me Daddy 8 Ice Road Puckers 1 Out
-1.6
Puck Dynasty 4 Morning After P 3 -0.1
Week of 2/18100.0*Chance in playoffs100.0*Average seed
Wolf Pack 4 Thundercats 4 -0.5
50's 4 Legalize It! 1 +0.2
Week of 2/25None
Games Above .500
Chance Will Make Playoffs