How are these numbers calculated?

Big Games

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

Week of 1/26100.0*Chance in playoffs100.0*Average seed
Shockers 6 Gunners 1 In
+0.5
Hawks 11 Pylons 1 In
Stars 1 Showers 7 -0.1
Thrashers 3 Rebels 1 +0.1
Shockers 1 Fireliners 0 +0.3
Knights 6 Showers 4 -0.1
Stars 2 Gunners 6 -0.1
Knights 5 Pucks 4 -0.1
Week of 2/2None
Week of 2/9None
Games Above .500
Chance Will Make Playoffs