How are these numbers calculated?

Big Games

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

Week of 11/26100.0*Chance in playoffs100.0*Average seed
James 144.86 Rob 132.8 -15.0
-0.9
Ortiz 77.96 Topper 84.74 -3.6
-0.1
Ruski 140.04 Darth 99.58 +3.1
+0.1
Meg 116.42 Jackie 123.12 -3.0
-0.1
CoP 113.56 Mel 142.78 -2.2
-0.2
Week of 12/3100.0*Chance in playoffs100.0*Average seed
Ortiz 117.8 Rob 122.84 +22.7
+0.8
Ruski 135.56 Topper 97.26 +5.8
+0.2
Moff 124.72 Jackie 124.18 +5.7
+0.2
David 65.82 Darth 103.22 -4.3
-0.1
James 129.84 Mel 135.54 -0.4
If winner is:HomeAway
Week of 12/10100.0*Chance in playoffs100.0*Average seed
Ruski vs Rob-14.2In
-1.0+1.0
David vs TopperIn-14.2
+0.2-0.2
CoP vs James+2.3-2.3
+0.2-0.2
Darth vs Jackie+2.2-2.2
+0.1-0.1
Ortiz vs Mel+0.2-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
101-0In31511813,506,817
90-171.6%622442813,497,511
Total:85.8%152920221427,004,328
Games Above .500
Chance Will Make Playoffs