How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Chance in playoffs100.0*Average seed
Witchey 98.4 Nightmares 84.6 +16.9
+0.7
New York 119.9 Jack 109.1 -2.0
-0.2
Hirth 117.8 El-Hayek 100.2 -0.1
+0.1
Week of 11/25100.0*Chance in playoffs100.0*Average seed
Sexton 93.5 Witchey 106 +55.7
+1.2
Nightmares 63.1 Jack 136.2 +5.6
+0.1
El-Hayek 114.1 Jones 90.5 -4.4
-0.4
Tom Brady 91.8 New York 96.3 -1.5
-0.0
Hirth 38.9 Ohio 87.2 +0.0
If winner is:HomeTieAway
Week of 12/2100.0*Chance in playoffs100.0*Average seed
Nightmares vs Tom Brady+13.3-44.2-44.2
+0.2-0.7-0.7
El-Hayek vs New York+10.8In-9.1
+0.1+0.4-0.1
Jack vs Witchey-2.4InIn
-0.1+1.2+1.2
Jones vs Ohio+11.1+11.1-5.6
+0.1+0.2-0.1
Sexton vs Hirth-2.0+6.5+6.5
+0.0+0.0-0.1

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs12345678910Count
71-0-0In524074,456,100
6.50-0-1In51418487,586
60-1-076.8%131442343,909,334
Total:79.1%632412148,853,020
Games Above .500
Chance Will Make Playoffs