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*Chance in playoffs100.0*Win Super Bowl100.0*Average seed
Pittsburgh 10 Buffalo 17 -23.5
-0.1
-0.6
Tennessee 21 Houston 24 +2.9
+0.0
New Orleans 34 Indianapolis 7 -2.5
+0.0
Arizona 38 Cleveland 24 +2.1
+0.1
Oakland 16 Jacksonville 20 +0.1
Kansas City 23 Denver 3 +0.1
+0.0
Week of 12/22100.0*Chance in playoffs100.0*Win Super Bowl100.0*Average seed
NY Jets 16 Pittsburgh 10 -27.5
-0.1
-0.4
Tennessee 28 New Orleans 38 +2.3
Indianapolis 38 Carolina 6 +1.1
LA Chargers 17 Oakland 24 -0.5
-0.1
Cleveland 15 Baltimore 31 +0.3
+0.0
Tampa Bay 20 Houston 23 +0.0
Week of 12/29100.0*Chance in playoffs100.0*Win Super Bowl100.0*Average seed
Houston 14 Tennessee 35 Out
No
-0.2
Jacksonville 38 Indianapolis 20 -18.4
-0.1
-0.1
Denver 16 Oakland 15 +9.1
+0.0
+0.5
Baltimore 28 Pittsburgh 10 -4.6
-0.1
New England 24 Miami 27 +3.5
+0.2
Minnesota 19 Chicago 21 -0.2
Detroit 20 Green Bay 23 +0.1
Kansas City 31 LA Chargers 21 +0.1
Games Above .500
Chance Will Make Playoffs

Lottery

We are out of the playoffs. Here are the big games and what ifs for draft seeds.
Although it might be more fun to go down swinging.

Big Games

Week of 12/12100.0*Lottery seed
Pittsburgh 10 Buffalo 17 +1.2
Arizona 38 Cleveland 24 -0.1
Tennessee 21 Houston 24 -0.1
Green Bay 21 Chicago 13 -0.0
New Orleans 34 Indianapolis 7 +0.0
Week of 12/22100.0*Lottery seed
NY Jets 16 Pittsburgh 10 +1.0
Tampa Bay 20 Houston 23 -0.1
Chicago 3 Kansas City 26 -0.1
Indianapolis 38 Carolina 6 -0.1
Cleveland 15 Baltimore 31 -0.0
San Francisco 34 LA Rams 31 -0.0
Week of 12/29100.0*Lottery seed
Houston 14 Tennessee 35 +0.5
Jacksonville 38 Indianapolis 20 +0.4
Minnesota 19 Chicago 21 +0.3
Denver 16 Oakland 15 -0.2
Baltimore 28 Pittsburgh 10 +0.1
New England 24 Miami 27 -0.1
LA Rams 31 Arizona 24 +0.0
Carolina 10 New Orleans 42 +0.0