Better finishing position
Canada -250 vs USA +175
Lets be honest. There really isnt much comparison quality wise when you compare to two possible rosters (There #1 center prolly wouldnt even make Canada). Add in home ice, smaller rink (which will favour a big Canadian team) and the fact that this USA team is basically going thru a rebuilding process and I think this is pretty much a slam dunk. Brian Burke has even mentioned in interviews this summer that his team is going to be young and on paper cannot matchup against the likes of Canada or Russia and that he also knows this team isnt going to be as strong as ones in the past.
Anything is possible but if all the teams in the tournament play up to there top potential, I think the only team that can beat the Canadians is Russia (Maybe Sweden but not likely). I also wouldnt be one bit suprised to see a little bias reffing go in Canadas favour this tournament.