Julia, that study is from a biased publication too. Moreover, it's not even a study, it's BS. I work with medical studies all the time (right now I'm taking a break from reading a long paper in Lancet open on another computer). This one is simply not serious. Instead of using hard data (like outcomes - e.g. European cancer mortality is dramatically higher than the American one) they use purely subjective responses in a survey. They don't even account for cultural differences - e.g. American consumers tend to be more demanding, and the service that they say "sucks" may actually be better than the service that some Europeans rate as "excellent". When people use such obviously flawed methodology, you not it's not a study - it's propaganda.