How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Chance in playoffs100.0*Average seed
PERS 63 CHICO 52 +4.6
+1.1
MUFF 62 KEIT 79 +2.6
+0.1
KING 77 BOS 80 +2.5
+0.3
VICK 80 ROSE 92 +0.2
+0.1
FD 74 CAT5 48 -0.2
MORA 34 NY 72 -0.2
-0.0
Week of 11/29100.0*Chance in playoffs100.0*Average seed
PERS 66 KEIT 62 +24.3
+1.9
FD 90 ROSE 137 +13.0
+0.5
MUFF 62 CAT5 91 +8.6
+0.3
KING 127 NY 93 -6.2
-0.4
VICK 99 BOS 68 -0.7
-0.1
Week of 12/6100.0*Chance in playoffs100.0*Average seed
CAT5 96 PERS 89 -47.1
-2.6
CHICO 90 KING 103 -21.5
-0.9
ROSE 73 MUFF 100 -2.7
-0.3
NY 81 VICK 77 +2.3
+0.2
BOS 69 FD 98 -1.2
-0.2
Games Above .500
Chance Will Make Playoffs