How are these numbers calculated?

Big Games

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

Week of 9/9100.0*Chance in playoffs100.0*Average seed
San Antonio 1 St Louis 3 +0.1
Salt Lake City 0 Orange County 2 -0.1
Vancouver 0 Col Springs 2 In
+1.2
Swope Park 3 Tulsa 0 -0.0
-0.0
OKC 2 Seattle 2 +0.1
Los Angeles 1 Sacramento 1 +0.1
RGV 0 Portland 1 +0.2
Los Angeles 1 RGV 0 +0.1
Week of 9/17100.0*Chance in playoffs100.0*Average seed
Col Springs 2 Seattle 1 +0.6
Orange County 0 RGV 1 -0.3
Sacramento 1 Los Angeles 1 +0.1
OKC 0 Swope Park 3 +0.1
Week of 9/24100.0*Chance in playoffs100.0*Average seed
Orange County 4 Col Springs 0 -0.6
RGV 3 San Antonio 0 -0.3
Tulsa 0 Sacramento 4 -0.2
Points
Chance Will Make Playoffs