How are these numbers calculated?

Big Games

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

Week of 11/23100.0*Relegated100.0*Average seed
Vasco da Gama 1 Sao Paulo 2 No
Sport Recife 3 Atletico-MG 0 *No
+1.1
Vitoria 4 Gremio 2 -0.3
Week of 11/30100.0*Relegated100.0*Average seed
Portuguesa 2 Sport Recife 2 -0.5
Botafogo 1 Figueirense 3 +0.2
Internacional 1 Cruzeiro 0 -0.2
Atletico-MG 0 Santos 0 +0.1
Coritiba 0 Vasco da Gama 2 +0.1
Sao Paulo 1 Fluminense 1 +0.0
Week of 12/7100.0*Relegated100.0*Average seed
Sport Recife 4 Coritiba 3 +0.9
Vasco da Gama 0 Vitoria 2 -0.3
Palmeiras 0 Botafogo 1 -0.2
Gremio 2 Atletico-MG 0 +0.2

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Points
Chance Will Win Championship