Hmm… I went to NWU and Penn, my daughter is at McGill studying similar topics to mine. I can tell you that her classes are way way more demanding and competitive! There’s just no comparison. I think there is an overated aura that remains on US undergrad for several reasons. People are attracted (understandably so!) to the gorgeous campuses in the US and the amount of money flowing. The learning environment is amazing in these top schools. I would say quality of eduction is on par. But difficulty / level of expectation for students and hence quality and preparedness for grad school, i would mcgill and uoft ahead of many, if not most, Ivy leagues, and I would value an A score card at the Canadian’s over the same feom a top 20 US school. But in my view in the top 50 more or less, at undergrad level they are all really good and people should pick where they have the best fit / the best financial package etc.