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 Out
Blizzard 5 MightyPylons 5 -0.8
Week of 3/29100.0*Chance in playoffs100.0*Average seed
YYZ 3 ThePeterNorthstars 5 -0.0
Week of 4/8None
Points
Chance Will Make Playoffs