How are these numbers calculated?

Big Games

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

Week of 10/11None
Week of 10/15100.0*Average seed
Orlando 0 Columbus 1 +0.5
Chicago 3 Philadelphia 2 -0.1
NY Red Bulls 0 Atlanta 0 +0.1
Week of 10/22100.0*Average seed
NYCFC 2 Columbus 2 -0.3
Houston 3 Chicago 0 +0.0
Atlanta 2 Toronto 2 +0.0
Points
Chance Will Make Playoffs