How are these numbers calculated?

Big Games

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

Week of 9/15100.0*Chance in playoffs100.0*Average seed
Santa Tecla 0 Real Salt Lake 0 +6.6
D.C. United 2 Árabe Unido 0 +0.9
+0.1
W Connection 2 Saprissa 1 +0.5
-0.1
Vancouver White 1 Olimpia 0 -0.4
Isidro Metapán 2 Herediano 0 +0.4
-0.0
Querétaro 8 Verdes 0 -0.2
+0.0
Central 1 Comunicaciones 0 +0.3
Walter Ferretti 1 América 3 +0.0
If winner is:HomeDrawAway
Week of 9/22100.0*Chance in playoffs100.0*Average seed
Real Salt Lake vs Santa Tecla+1.2-4.1-4.0
+0.1-0.1-0.7
Isidro Metapán vs UANL+0.5+0.2-0.3
-0.4-0.4+0.3
Seattle Sounder vs Vancouver White-0.3+0.3+0.2
-0.1-0.2+0.2
W Connection vs Santos Laguna+0.5+0.2-0.1
-0.4-0.2+0.1
Walter Ferretti vs Motagua+0.1+0.1-0.1
+0.5+0.2-0.3
Verdes vs San Francisco-0.0+0.1-0.0
Central vs LA Galaxy-0.8-0.3+0.1
Montego Bay Uni vs D.C. United-0.2-0.0+0.0

What If

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

100100100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inHighestChance will finish regular season at seed
TPW-OTLDplayoffsSeed123456789101112131415161718192021222324Count
71-00085.8%No016233522941001,009,456
50-0010.0No000161932291220001,652,476
40-010OutNo018233323930007,920,628
Total:8.2%No0012321114112226177200010,582,560
Points
Chance Will Make Playoffs