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
Whitehaven 28 Keighley 22 -4.5
+4.5
-0.2
Oxford 20 North Wales 52 -2.5
+2.5
-0.1
Hunslet 56 Coventry 24 -2.5
+2.5
-0.1
Barrow 36 All Golds 6 +2.4
-2.4
+0.1
Doncaster 10 Newcastle 20 -0.7
+0.7
-0.1
Workington 46 London 16 +0.6
-0.6
Doncaster 34 Oxford 16 -0.3
+0.3
-0.0
Week of 7/8100.0*Super 8100.0*League 1 Shield100.0*Average seed
North Wales 12 Whitehaven 12 -22.1
+22.1
-0.3
London 30 Hunslet 16 +10.5
-10.5
+0.1
Workington 30 Keighley 30 +5.4
-5.4
+0.3
Toronto 62 All Golds 10 +1.5
-1.5
+0.0
South Wales 12 Doncaster 70 -0.0
Newcastle 68 Coventry 20 -0.0
Week of 7/15100.0*Super 8100.0*League 1 Shield100.0*Average seed
Keighley 92 Oxford 6 +26.0
-26.0
+0.6
Coventry 13 North Wales 36 -3.4
+3.4
-0.1
Hunslet 26 Newcastle 25 -2.5
+2.5
-0.2
All Golds 4 Doncaster 42 +1.4
-1.4
+0.1
York 34 Workington 0 +0.3
-0.3
+0.2
Games Above .500
Chance Will Win Championship