How are these numbers calculated?

Big Games

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

Week of 7/30100.0*Chance wins title100.0*Championship100.0*Average seed
Queenstown 5 Auckland 3 +20.9
+20.9
+0.2
Queenstown 5 Auckland 3 +16.6
+16.6
+0.2
Week of 8/6100.0*Chance wins title100.0*Championship100.0*Average seed
Dunedin 1 Queenstown 3 Yes
Yes
Week of 8/13None
Points
Chance Will Win Championship