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
Ross 83.14 Blair 78.42 +15.5
+0.6
Chris/Jonny 110.14 Alex 126.68 +4.4
+0.1
Goodman 54.68 Aaron 114.8 -1.8
-0.1
Neil 114.38 Cunje 120.04 +1.0
+0.0
Kevin 91.5 Dave 78.62 +0.5
+0.0
Campo 85.18 Nick 69.86 -0.2
Week of 11/29100.0*Chance in playoffs100.0*Average seed
Ross 102.98 Alex 87.08 +7.1
+0.8
Chris/Jonny 147.6 Dave 141.8 -2.5
Neil 88.9 Campo 85.86 +1.7
Goodman 104.38 Nick 98.24 -1.2
+0.2
Kevin 95.82 Aaron 179.8 -0.5
-0.3
If winner is:HomeAway
Week of 12/6100.0*Chance in playoffs100.0*Average seed
Ross vs DaveIn-0.4
+0.4-1.0
Chris/Jonny vs Aaron-0.2In
+0.4-0.3
Blair vs AlexIn-0.1
Kevin vs Nick-0.1In
+0.2-0.4

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
81-0In28522040,982,934
70-199.4%46036116,874,850
Total:99.8%20383210057,857,784
Games Above .500
Chance Will Make Playoffs