How are these numbers calculated?

Big Games

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

Week of 2/26100.0*Chance wins title100.0*Playoffs100.0*Last Place Game100.0*Average seed
We Bowl Bowling 0 Snakes on the L 451 No
No
+10.2
-0.3
Gutter? I hardl 0 Split Personali 550 -0.3
+0.0
Duck Duck Turkey 481 Strike Gold 0 -1.9
+0.0
Week of 3/5100.0*Chance wins title100.0*Playoffs100.0*Last Place Game100.0*Average seed
We Bowl Bowling 553 Split Personali 562 +2.3
-0.0
Strike Gold 0 Snakes on the L 405 -0.1
+0.0
Week of 3/12100.0*Chance wins title100.0*Playoffs100.0*Last Place Game100.0*Average seed
We Bowl Bowling 613 Duck Duck Turkey 0 No
+1.7
Games Above .500
Chance Will Win Championship