How are these numbers calculated?

Big Games

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

Week of 12/12100.0*Average seed
Kansas City 23 Denver 3 +0.1
Tennessee 21 Houston 24 +0.0
Cincinnati 13 New England 34 -0.0
Baltimore 42 NY Jets 21 -0.0
Week of 12/22100.0*Average seed
Chicago 3 Kansas City 26 +0.2
Tampa Bay 20 Houston 23 -0.1
New England 24 Buffalo 17 -0.1
Cleveland 15 Baltimore 31 -0.0
Week of 12/29100.0*Average seed
New England 24 Miami 27 +0.7
Kansas City 31 LA Chargers 21 +0.1
Houston 14 Tennessee 35 +0.1
Games Above .500
Chance Will Make Playoffs