Last year I went to Europe for a two week vacation. I stuffed myself like a greedy pig for two weeks, but I barely gained any weight on my return to the US. The next week, I went on a staff retreat for only 3 days and stuffed myself again. That time, I gained more than twice what I'd gained in Europe.
I'm convinced that the quality of European food is, on average, vastly superior to what's available in America.