How are these numbers calculated?

Big Games

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

Week of 8/11100.0*Average seed
LuckyPucks 4 TheCranston 4 +0.3
Blizzard 8 Neoscape 3 -0.1
BlackHawks 2 Dangleberries 2 +0.1
LuckyPucks 6 LastCall 1 -0.1
Week of 8/18100.0*Average seed
Blizzard 4 TheCranston 3 -0.6
BlackHawks 4 LastCall 1 -0.2
LuckyPucks 8 Blizzard 4 -0.1
Week of 8/25None
Points
Chance Will Make Playoffs