How are these numbers calculated?

Big Games

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

Week of 4/8100.0*Chance in playoffs100.0*Average seed
Roughnecks 16 Stealth 12 +12.8
+0.3
Rock 10 Black Wolves 14 +3.3
Swarm 17 Mammoth 10 -2.0
Black Wolves 14 Rush 13 -0.4
-0.1
Bandits 14 Knighthawks 12 +0.3
+0.1
Week of 4/15100.0*Chance in playoffs100.0*Average seed
Bandits 14 Rock 8 +2.6
+0.0
Rock 12 Bandits 9 -2.1
If winner is:HomeAway
Stealth vs Roughnecks-28.5+25.3
-0.7+0.6

What If

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

100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789Count
81-088.9%60291111,227,756
70-135.1122432339,967,652
Total:63.6%3727211621,195,408
Games Above .500
Chance Will Make Playoffs