Detroit Lions Playoff Chances 2012-2 50/50

Lost to Chicago 24-26, lottery seed up 0.2 to 28
4-12-0   .250

How are these numbers calculated?

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 12/13100.0*Lottery seed
Arizona 38 Detroit 10 +1.9
Miami 24 Jacksonville 3 +0.2
Seattle 50 Buffalo 17 -0.2
Washington 38 Cleveland 21 -0.1
Cincinnati 34 Philadelphia 13 -0.1
Tennessee 14 NY Jets 10 +0.1
New Orleans 41 Tampa Bay 0 +0.1
Oakland 15 Kansas City 0 +0.1
Minnesota 36 St. Louis 22 -0.1
Week of 12/22100.0*Lottery seed
Atlanta 31 Detroit 18 +1.7
Washington 27 Philadelphia 20 -0.2
Miami 24 Buffalo 10 -0.1
Green Bay 55 Tennessee 7 -0.1
Denver 34 Cleveland 12 -0.1
Carolina 17 Oakland 6 -0.1
San Diego 27 NY Jets 17 +0.1
Chicago 28 Arizona 13 -0.1
Week of 12/30100.0*Lottery seed
Chicago 26 Detroit 24 +1.2
San Diego 24 Oakland 21 -0.3
Tennessee 38 Jacksonville 20 +0.3
Pittsburgh 24 Cleveland 10 -0.3
NY Giants 42 Philadelphia 7 -0.2
Buffalo 28 NY Jets 9 +0.2
Games Above .500
Chance Will Make Playoffs