How are these numbers calculated?

Big Games

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

Week of 6/30100.0*Average seed
Reds 37 Rebels 23 +0.5
Jaguares 25 Stormers 14 +0.1
Week of 7/7100.0*Average seed
Reds 48 Sunwolves 27 +0.3
Hurricanes 42 Blues 24 +0.3
Stormers 27 Sharks 16 -0.3
Bulls 43 Jaguares 34 -0.1
Week of 7/14None
Points
Chance Will Make Playoffs