I'm not sure I buy that because the US's tuition rates are absolutely insane, and thus they have better top-end universities is necessarily correlated with better education. Maybe for those that are actually able to attend the schools, sure. But the percentage of the population that is able to get that quality of education is quite a bit lower.
I personally think a slight dip in quality (seriously, are the lawyers that come from Harvard distinctly "better" than those that come from UofC or UBC? Enough to so to warrant the extreme difference in cost?) for the opportunity to educate anyone who so desires trumps the "prestige" of having more universities on that list.
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