To paraphrase Richard Feynman: you're not right; in fact, you're not even wrong.
No I don't find Swedish cities interesting. But I did not start quizzing you about U.S. cities. If you started quizzing me about Swedish cities, then it would be fair for me to quiz you about American ones. The issue of cities is irrelevant; the concept at discussion is "turnabout is fair play." The guy who asked about Zurich wanted to show how stupid Americans were by trumpeting his culturally specific, regionally biased knowledge. To show how this was just snobbery, an American did the same to him. It doesn't matter if you don't think America is interesting; that's not what this is about.
Note: I actually like Europe; I'm just trying to prove a point.
Oh, you don't find that interesting? Well, hardly anyone outside Sweden probably does. Pointless knowledge.