How are these numbers calculated?

Big Games

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

Week of 5/16100.0*Average seed
Braga 1 Benfica 3 +0.3
CD Nacional 1 Paços Ferreira 0 +0.1
Week of 5/23100.0*Average seed
FC Porto 1 Braga 1 +0.1
Sporting Lisbon 3 CD Nacional 1 -0.1
Points
Chance Will Win Championship