We've been getting bombarded with American TV every single day for many decades. Most of us around the world never visit the country, let alone live in it. The closest we get to see a glimpse of life in the USA is through fictional tv shows and movies. The question is: what is real and what is either not real or just highly exaggerated?
Asides from the obvious ones like not everyone being rich and good looking and superheroes not existing, of course. I very much know the Ninja Turtles aren't real, fret not.

. Just like the streets of Japan aren't filled with teenagers with super powers.