How are these numbers calculated?

Big Games

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

Week of 11/24100.0*Chance in playoffs100.0*Average seed
triplec 110 pistolshrimp 88 -36.1
-1.0
mudslingers 82 hotchubbtimemachine 67 -6.4
+0.1
Week of 12/1100.0*Chance in playoffs100.0*Average seed
triplec 112 mudslingers 61 -13.6
hotchubbtimemachine 74 snowballschance 89 +11.0
+0.3
twodogs 110 smokenhoes 47 +8.4
+0.3
dixienormous 75 milehighmagic 84 -3.6
-0.2
If winner is:HomeAway
Week of 12/8100.0*Chance in playoffs100.0*Average seed
pistolshrimp vs snowballschance+25.4-47.6
+0.9-1.7
mudslingers vs milehighmagic+9.8-14.8
+0.1-0.2
hotchubbtimemachine vs joplinjoe-17.0+4.1
-0.4+0.1
twodogs vs deeznutz-0.2+0.4
-0.1+0.1
dixienormous vs triplec+0.3-0.0

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
71-081.6%0414117238,587,621
60-18.6920232318720,556,571
Total:56.2%0273018986259,144,192
Games Above .500
Chance Will Make Playoffs