How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Promoted to Top 14100.0*Average seed
Albi 34 Carcassonne 22 +2.7
+0.5
Bourgoin 14 Montauban 20 -0.1
Biarritz 42 Agen 18 -0.1
Aurillac 20 Colomiers 13 +0.2
Pau 22 Perpignan 19 +0.1
Mont-de-Marsan 32 Béziers 18 -0.1
Week of 11/29100.0*Promoted to Top 14100.0*Average seed
Perpignan 15 Aurillac 15 +0.5
Mont-de-Marsan 26 Albi 17 -0.4
Week of 12/7None
Games Above .500
Chance Will Win Championship