Although it could be about the numbers of players on a game it's also about the amounts bet. For example , if you had 100 players bet ND -7 at 10.00 $ each and then 2 players bet 1000.00 on FSU+7 , so you would need a ND win to profit. You'd be losing 1000 to the ND players but gaining 2000 from the FSU players , thus profit of 1000.00 $ over all. So you would have ND as a need . I think my math and example is right ? If I'm wrong I'm sure I'll hear about it......lol