How are these numbers calculated?

Big Games

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

Week of 4/20100.0*Average seed
Clermont 39 Toulouse 17 -0.1
Paris 19 Racing Métro 16 +0.1
Week of 5/4100.0*Average seed
Racing Métro 29 Castres 28 +0.1
Toulouse 57 Grenoble 7 +0.1
Games Above .500
Chance Will Make Playoffs