I see your point. I believe that the reason the total is so low, is because even as bad as the Johnnies are, they still only give up an average of 66 points per game. (66+ your 50 you are shooting for, is going to equal two losers; and this scenerio still leaves 9 points to play with. Even at that, Prov. averages 71 points per game, add that to your 50, and you still have two losers.
I am just not to sure about this one, but I've been wrong more than right in my lifetime of betting. Good luck.