There's a volume component to it too, Colgate, and also implied is that there is 'funny business' with officiating in games that meet the disparity and volume criteria, so the side with the lowest tickets written prevails (usually, but not always, the Under and/or the Dog).
It's not my system, but that's the best way I can describe it. I don't think anyone has gone back over NHL results, and I know ManCreature was starting to look at CBB and NBA when we last heard from him. I'm sure he has a well paying job now with Cantor...lol.
Valley Vikings aka ManCritter