All are decent teams, but Greece beat China 12-8 at the last World Championships where six of the eight quarterfinalists were European (along with USA and Australia). Greece and Canada have played each other many times in the past, and I don't think Canada has ever beaten us.
I mean no disrespect, but Canada probably would not have qualified if USA didn't win the world quota. My point was that Canada, Australia, South Africa (who will get destroyed in every game), and China didn't even have to break a sweat to qualify. They simply qualified because they exist. Try putting yourselves in our shoes for once and you may change your perspective.