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 wins title100.0*Average seed
Toronto 64 York 22 -0.3
Barrow 36 All Golds 6 +0.1
+0.0
Whitehaven 28 Keighley 22 -0.0
Week of 7/8100.0*Chance wins title100.0*Average seed
Toronto 62 All Golds 10 No
Barrow 80 Oxford 10 +0.0
Week of 7/15100.0*Chance wins title100.0*Average seed
Whitehaven 32 Barrow 6 -0.4
Games Above .500
Chance Will Win Championship