When Paul Krugman said "Europe's economic success should be obvious even without statistics. For those Americans who have visited Paris: did it look poor and backward? What about Frankfurt or London? You should always bear in mind that when the question is which to believe -- official economic statistics or your own lying eyes -- the eyes have it." I had roughly the same reaction that Matt Welch did: having lived in London for intermittent (short) periods, I found it noticeably poorer than the United States.I remember seeing similar differences in Paris in the 1990s. Parisians weren't poor but they had a noticeably lower standard of living than we have here. For example, kids there obviously had seen Rollerblades on television shows from North America but most couldn't afford them and bought old style roller skates instead. By the end of the decade, the kids all had Rollerblades but in 1995 they were nonexistent on Paris streets. (Although a few rich kids must have already had them. The other thing that really jumps out at you in Paris is how much more clearly the line between rich and poor is marked there.)
And, at the risk of offending lots of fellow Canadians, we are in the middle; when I go to the USA, I can't help but notice that people there have a higher standard of living than we do here. I know the temptation is to say "So what?" about such an unimportant difference but the cumulative effect of such small differences is substantial. Morally speaking, the difference isn't worth worrying about, economically speaking it matters.
PS: The really rude question about Canada is whether we could exist in anything even vaguely like our present form without the USA for a neighbour. It's a rhetorical question of course. Bring it up in the company of any member of the Canadian intellectual class, however, and you will get a quick demonstration of what irrational hatred looks like.