Sweden has two universities in the top ~100. Boston has three. New York, Los Angeles, Chicago, Atlanta, San Francisco, and Pittsburgh have two, mostly in the top 50.
That's because your source is coarse grained. Look at a list of specific subjects, in my example medicine (and an old list of maritime biology institutions, hence "sometimes"), and you'll find the counter examples.
But hey, I'm cherrypicking data here, so it's not relevant to anything else than as a counter data point to a very broad and wrong statement.
But hey, I'm cherrypicking data here, so it's not relevant to anything else than as a counter data point to a very broad and wrong statement.