How are these numbers calculated?

Big Games

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

Week of 7/1100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Brumbies 43 Reds 24 +6.3
+6.4
+0.3
Kings 37 Highlanders 10 +3.0
Hurricanes 37 Blues 27 -1.6
Sunwolves 12 Waratahs 57 -1.5
-2.2
-0.1
Chiefs 23 Crusaders 13 -0.3
Rebels 31 Stormers 57 +0.1
+0.1
Week of 7/8100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Waratahs 17 Hurricanes 28 +9.0
+25.1
+0.8
Blues 40 Brumbies 15 -8.6
-18.1
-0.6
Jaguares 8 Highlanders 34 -3.3
-0.0
Week of 7/15100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Brumbies 24 Force 10 In
Yes
+0.4
Blues 34 Waratahs 28 In
Yes
+0.2
Points
Chance Will Make Playoffs