I mean the other 2 countries, Canada and Mexico, how similar are both of them to United States?? Both countries have a similar economy and democracy etc, and I think those two countries share things like supermarkets, stores, etc. I suppose the cultural differences are not a lot, that is very nice.
You compare cities of the same size. You don’t compare Toronto to NYC.
I mean it really depends on what you’re measuring to compare car dependence. Is it number of people who have to drive every day? Number of cities where most of the population has to drive every day? Are you comparing transit infrastructure on equivalently sized cities (and then is the size by population, or do you compare cities of the same density…). If you’re looking at how many people across the country need a car, NYC is very relevant. Realistically this is something that mostly makes sense to compare by city rather than by country (obviously the country has influence over transit, but that’s not really the point).