Having lived in both countries for prolonged periods of time, I can say that both have strong points and weak points.
Americas strong points are the general niceness of the people, the universities, the stronger economy and technological prowess, the work ethic and the general cost of living is lower.
The downside is that Americans by and large dont seem to care about intellectual things so much (politics, art, science). Not that they don't know about it, but they seem to prefer talking about say football. The other downside, particularily in the south, is the puritanism and radical christian nuts.
France otoh, has amazing food, better spent leisure time, and people who (even with the same education) are apt to be interested in more things. They are also far more open about sexuality, and IMO that leads to better relations and romance over there.
The downside is the cost of living is excessive, a strange preference for obscure handwaving theories, radical environmentalists and extreme leftists and a sort of general arrogance about everything.