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*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Reds 37 Rebels 23 +0.1
+3.8
+0.2
Sharks 31 Lions 24 +0.3
Week of 7/7100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Bulls 43 Jaguares 34 In
Stormers 27 Sharks 16 In
Waratahs 77 Sunwolves 25 In
Yes
+0.1
Week of 7/14100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Waratahs 31 Brumbies 40 -0.5
Lions 38 Bulls 12 -0.1
Points
Chance Will Make Playoffs