How are these numbers calculated?

Big Games

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

Week of 8/18None
Week of 8/23100.0*Chance in playoffs100.0*Average seed
DudleyAvalanche 1 LordStanleysCup 6 In
+0.1
Nordekes 4 Hellfish 4 +1.5
-0.1
Week of 8/31100.0*Chance in playoffs100.0*Average seed
Hellfish 3 Jackals 2 +0.5
Nordekes 5 LordStanleysCup 3 -0.3
Points
Chance Will Make Playoffs