How are these numbers calculated?

Big Games

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

Week of 1/27100.0*Chance in playoffs100.0*Average seed
Roughnecks 12 Mammoth 8 +7.5
+0.3
Stealth 12 Swarm 14 +1.6
+0.1
Rush 16 Stealth 12 -0.1
If winner is:HomeAway
Week of 2/3100.0*Chance in playoffs100.0*Average seed
Roughnecks vs Rush+4.1-4.1
+0.3-0.3
Mammoth vs Swarm-1.4+1.4
-0.1+0.1

What If

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

100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345Count
15-17In1006,686,624*
1411-3In100021,980,660
1310-4In991060,395,320
129-5In9550120,710,315
118-6100.0%792100181,015,378
107-799.9464770206,881,793
96-897.31453313181,038,530
85-980.71245519120,720,998
74-1046.604435360,405,189
63-1117.40178321,984,248
52-124.204965,498,506
41-130.6199846,438
30-140.00100333,835
Total:91.4%4727179988,497,834

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs