You're right, it could cause a little bit of a quirk. Canada is currently ranked 4th in the world (believe it or not). I believe the top 3 ranked teams are assured they won't be in the same preliminary group. So, essentially, there is a 1 in 3 chance now that Russia and Canada, arguably the two best teams, will be in the same preliminary "group of death." If the United States loses today there is a remote chance that one of the groups could consist of Russia, Canada, USA, and a lesser team.