Real talk: what does the US do better than Canada?

Once again a perspective that is influenced by a political narrative comes into play. Any country that is inhabited by people from all over the world is hard to categorize and quantify as being "better" at anything than any other country of equal social diversity.
If you look at things from a 'historical' perspective and tally up some kind of 'score', then the United States could be called the 'best' at everything and the overall 'winner', but that is simply because the whole foundation of America's formation and sociological evolution was diversity.