How are these numbers calculated?

Big Games

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

Week of 4/19100.0*Chance in playoffs100.0*Average seed
Fusion 1 Excelsior 3 +0.0
+0.2
Uprising 0 Spitfire 4 -0.3
Dynasty 4 Fuel 0 +0.1
Uprising 0 Titans 4 -0.1
Shock 4 Spark 0 -0.0
Hunters 1 Gladiators 3 -0.0
Defiant 0 Shock 4 -0.0
Week of 4/28100.0*Chance in playoffs100.0*Average seed
Spitfire 4 Eternal 0 -0.2
Spitfire 1 Hunters 3 +1.6
If winner is:HomeAway
Week of 5/3100.0*Chance in playoffs100.0*Average seed
Excelsior vs Reign+0.3-2.1
Outlaws vs Spitfire+0.8-0.0
Gladiators vs Uprising-0.0+0.1
Titans vs Defiant-0.0+0.1

What If

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

100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011121314151617181920Count
61-0In082021626,036,481,145
50-1In301961004,105,901,735
Total:In071012700030,142,382,880
Games Above .500
Chance Will Make Playoffs