Well, bringing ourselves into the equation: I live off of less than minimum wage (around $280 a month) and am only able to avoid living with my parents because I'm living in a couple I'm friends with's side house for $50 a month. So I wouldn't say I'm thriving in America, haha. But yes, I'd say in general people in America are better off. I just think we should try to avoid seeing other countries as chock-full of poor folks, since there are at least SOME people in other countries doing fairly well.
(Even though you're definitely right, in the long run, haha)