How are these numbers calculated?

Big Games

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

Week of 11/16100.0*Chance in playoffs100.0*Average seed
retnuh101 107.98 imjoshb 108.22 +28.8
+1.0
Sh0wbizChiz 120.64 Vacar 83.82 +7.9
+0.1
a0ashle 93.12 BillyDaButcha 97.38 -2.0
OprahsTit 141.86 DarkPC 87.8 -1.4
-0.1
If winner is:HomeAway
Week of 11/23100.0*Chance in playoffs100.0*Average seed
DarkPC vs imjoshb-27.7+7.3
-1.2+0.3
asmitty vs Vacar+6.8-3.5
+0.1-0.1
BillyDaButcha vs retnuh101+3.2-3.2
+0.1-0.1
a0ashle vs OprahsTit-1.1+0.4
+0.1-0.0
jeff_underscore vs Sh0wbizChiz-0.1+0.0

What If

Chances based on how well the imjoshb finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
82-0In604014,427,599
71-195.4%1455364023,476,839
60-237.1433422015,159,786
Total:90.0%2015312372043,064,224
Games Above .500
Chance Will Make Playoffs