Detroit Lions Playoff Chances 2012 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
Buffalo 17 Seattle 50 -0.2
Cleveland 21 Washington 38 -0.1
Philadelphia 13 Cincinnati 34 -0.1
Tennessee 14 NY Jets 10 +0.1
New Orleans 41 Tampa Bay 0 +0.1
Oakland 15 Kansas City 0 +0.1
Week of 12/22100.0*Lottery seed
Detroit 18 Atlanta 31 +1.7
Philadelphia 20 Washington 27 -0.3
Carolina 17 Oakland 6 -0.1
Denver 34 Cleveland 12 -0.1
Green Bay 55 Tennessee 7 -0.1
Miami 24 Buffalo 10 -0.1
NY Jets 17 San Diego 27 +0.1
Week of 12/30100.0*Lottery seed
Detroit 24 Chicago 26 +1.2
San Diego 24 Oakland 21 -0.5
NY Giants 42 Philadelphia 7 -0.3
Pittsburgh 24 Cleveland 10 -0.2
Tennessee 38 Jacksonville 20 +0.2
Buffalo 28 NY Jets 9 +0.2
Games Above .500
Chance Will Make Playoffs