How are these numbers calculated?

Big Games

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

Week of 3/23100.0*Chance in playoffs100.0*Average seed
Samsquanch 7 Meatballs 3 +43.0
+0.5
Blizzard 5 MightyPylons 5 -3.7
-0.0
Week of 3/29100.0*Chance in playoffs100.0*Average seed
MightyPylons 5 Meatballs 6 In
+0.3
Week of 4/8None
Points
Chance Will Make Playoffs