I think you can see it at different levels even on the other side of the medal. I think customer care Americans experience is stellare compared to Europe on average, because Europeans hardly will blame enough the service supplier even when it is the case and this would result in raising the level of service. Apple was one of the first companies to provide US customer service here and at first I and my friends were pretty surprised that this was possible at all.
As with everything I guess this is just a bias and everywhere there are people of all the kinds, but because of culture there are some biases. Like, sicilians can be the most honest often, but surely on average my island exhibits a bias for not being able to stay in line, park the car where it is not possible and so forth. Basically I'm not generalizing.