I think a person looking for the differences will always see the differences; whether that is in countries or people. People who try to see commonality, or the logical reasons for differences, will see those too. The first sometimes make for unrealistic travelers because nothing is as good as it is back home - or conversely, everything is better.

I enjoy reading about great places to cycle and different infrastructure than I am used to but don't need the negative contrast. No one is going to convince me that North America is somehow different than the North America I've known for 55 years.

And, If I had a nickel for every time I thought someone was looking funny at me on my bike I'd be able to afford to drive a car instead.