How are these numbers calculated?

Big Games

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

Week of 2/23100.0*Chance wins title100.0*Champion100.0*Average seed
JOHN CENA 1 Honorable Mention 1 -6.7
-6.7
+0.2
Average Gang 2 Sammy 0 -4.8
-4.8
+0.1
BBC 0 Pakistani House 1 +3.2
+3.2
Just Send It 1 BME 0 -0.1
Smooth Brain 2 Slippery Shafts 0 +0.0
Week of 3/1100.0*Chance wins title100.0*Champion100.0*Average seed
JOHN CENA 2 Just Send It 0 +1.7
Average Gang 3 Smooth Brain 0 +0.3
Slippery Shafts 1 BBC 2 -0.2
BME 0 Sammy 1 -0.2
Games Above .500
Chance Will Win Championship