How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Chance in playoffs100.0*Average seed
Blackout/Redbri 5 Sport Boys 5 +1.8
+0.1
Hoops 8 AZ Meltdown 1 -1.5
-0.2
PS3's 1 7 Minutemen 1 +1.0
El Nino' 2 Joes Real BBQ 6 -1.0
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Sport Boys 2 Hoops 7 -0.6
7 Minutemen 4 Blackout/Redbri 5 +0.2
El Nino' 3 AZ Meltdown 7 -0.1
Points
Chance Will Make Playoffs