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*Super 8100.0*League 1 Shield100.0*Average seed
Oxford 20 North Wales 52 +15.5
-15.5
+1.2
Barrow 36 All Golds 6 +2.6
-2.6
+0.1
Whitehaven 28 Keighley 22 +2.5
-2.5
+0.1
Hunslet 56 Coventry 24 -2.3
+2.3
-0.1
Workington 46 London 16 -1.5
+1.5
+0.0
Doncaster 34 Oxford 16 -1.2
+1.2
Doncaster 10 Newcastle 20 -0.6
+0.6
-0.0
Toronto 64 York 22 +0.2
-0.2
Week of 7/8100.0*Super 8100.0*League 1 Shield100.0*Average seed
North Wales 12 Whitehaven 12 +9.4
-9.4
+0.1
London 30 Hunslet 16 +4.5
-4.5
+0.1
Toronto 62 All Golds 10 +3.7
-3.7
+0.2
Workington 30 Keighley 30 +0.8
-0.8
+0.1
York 68 Hemel 6 -0.4
+0.4
-0.1
South Wales 12 Doncaster 70 -0.1
+0.1
-0.1
Newcastle 68 Coventry 20 -0.1
+0.1
-0.1
Barrow 80 Oxford 10 +0.1
Week of 7/15100.0*Super 8100.0*League 1 Shield100.0*Average seed
Coventry 13 North Wales 36 +31.4
-31.4
+1.1
Keighley 92 Oxford 6 -20.3
+20.3
-0.3
York 34 Workington 0 +5.2
-5.2
+0.1
Hunslet 26 Newcastle 25 -0.7
+0.7
-0.3
All Golds 4 Doncaster 42 +0.2
-0.2
+0.2
London 36 South Wales 16 -0.2
Games Above .500
Chance Will Win Championship