Most "American Values" are basically just puritan ethics. In America, you won't see someone sipping a beer on the subway for the same reason you see someone take take a 4 week summer vacation, or a nipple on TV. Most of the quirky values that separate us from western europe (like hard work, temperance, abstinence, etc.) can be traced back to our puritan roots.
Are you including the US' views on sex and nudity and the puritan work ethic in that? Sex and nudity in films will make them get an instant R-rating, but murder will only get a PG-13.
The puritan work ethic is the reason Americans work themselves to death and judge the poor: "They obviously deserve it because they must not work hard." It's obviously circular reasoning, but "not working hard" is a moral failing in the US.
The reason Americans drink less alcohol at the median, is due to how American populations are heavily distributed in housing developments, in suburbs, versus the higher density & primate cities that you see in nearly all of Europe. We gather less frequently European-style, we don't walk or bus or train nearly as much, so the majority generally avoids drinking & driving. In the US if you're going somewhere, the odds are high that you're driving to and from; drinking and driving is an incredibly high penalty risk to take now.