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
Twilight Sparkle 82.62 Head Strong 76.74 +23.5
+1.0
Thoroughbred 107.52 Gladiators 78.88 +3.4
+0.1
Vizag Steelers 50.14 Gym Class Heros 72.4 -3.3
Star Screamers 116.34 Crushers 108.06 -1.3
-0.1
Steagles 80.6 Andhra Loyals 66.68 +0.7
+0.1
3rd Degree Burn 128.6 FatBob 67.82 -0.5
If winner is:HomeAway
Week of 11/23100.0*Chance in playoffs100.0*Average seed
Twilight Sparkle vs 3rd Degree Burn+15.8-15.8
+0.7-0.7
Gladiators vs Head Strong-5.5+5.5
-0.2+0.2
Gym Class Heros vs Crushers-5.3+5.3
-0.2+0.2
Andhra Loyals vs FatBob-4.7+4.7
-0.1+0.1
Thoroughbred vs Star Screamers+1.2-1.2
+0.1-0.1
Vizag Steelers vs Steagles-0.7+0.7

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
82-0In1472143,051,895
71-191.8%155523716,102,750
60-236.963149143,056,099
Total:80.1%425321916412,210,744
Games Above .500
Chance Will Make Playoffs