How are these numbers calculated?

Big Games

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

Week of 9/29100.0*Chance in playoffs100.0*Average seed
North Carolina 3 Richmond 2 Out
Charlotte 2 Pittsburgh 2 +0.0
Penn 2 Charlotte 2 -0.2
Atlanta II 1 Tampa Bay 1 +0.0
Week of 10/5100.0*Chance in playoffs100.0*Average seed
Penn 1 New York II 3 -0.1
Tampa Bay 1 Charlotte 2 -0.1
Week of 10/13None
Points
Chance Will Make Playoffs