How are these numbers calculated?

Big Games

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

Friday, 6/13100.0*1st Seed100.0*Average seed
Halton 13 Mississauga 12 -0.9
+0.0
Wednesday, 6/18100.0*1st Seed100.0*Average seed
Mississauga 8 Buffalo 12 +23.4
+0.5
Friday, 6/20100.0*1st Seed100.0*Average seed
Halton 6 Buffalo 3 No
-0.5
Games Above .500
Chance Will Make Playoffs