I'm curious, do you mind explaining, what a top 10 university is (e.g. ranked by students, number of published papers etc.)? FYI, the ETH is also considered as a top 10 university (top 6 actually according to https://en.wikipedia.org/wiki/QS_World_University_Rankings)
If the comment was made by a professor in the U.S., it could have meant "top 10 <in the field> in North America".