How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Sunday, 5/26100.0*Chance in playoffs100.0*Average seed
Aiur Storms 3 Mar Sara Threat 8 -19.5
-0.5
Redstone Reapers 3 New Gettysburg 2 -10.9
-0.1
Char Meleons 11 Tarsonis City T 0 -1.8
Shakuras Inquis 3 Korhal War Pigs 4 +1.7
+0.1
Sunday, 6/2100.0*Chance in playoffs100.0*Average seed
Aiur Storms 4 Char Meleons 3 +22.7
+0.5
Shakuras Inquis 2 Aiur Storms 6 +22.7
+0.5
Tarsonis City T 3 Redstone Reapers 8 -11.7
-0.2
Redstone Reapers 4 Shakuras Inquis 1 -7.0
Mar Sara Threat 8 Tarsonis City T 3 -5.5
-0.2
Korhal War Pigs 3 Mar Sara Threat 0 +3.1
+0.2
Char Meleons 4 New Gettysburg 3 (ot)+0.8
+0.1
New Gettysburg 3 Korhal War Pigs 7 +0.8
+0.1
Points
Chance Will Make Playoffs