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*Home Quarterfinal100.0*Average seed
Brumbies 24 Hurricanes 12 -11.1
-0.2
Highlanders 22 Chiefs 45 -1.1
Crusaders 45 Highlanders 22 +0.2
Week of 7/7100.0*Home Quarterfinal100.0*Average seed
Chiefs 24 Brumbies 19 -6.4
-0.1
Hurricanes 42 Blues 24 +4.5
+0.1
Bulls 43 Jaguares 34 +0.3
Week of 7/14None
Points
Chance Will Make Playoffs