It's a strange cultural difference. In America, people are obsessed with blowjobs and it's self-evident that a girl will go down on a man. But a man giving head to a girl is seen as more exceptional.
In Europe, it's just the other way around. When you're in a bar looking for a date, you will probably seduce a girl and kiss her pussy first, before anything else happens. Pleasuring the woman is central for European men. They can't enjoy sex if the girl doesn't enjoy it.
Where does this difference come from? Are European men more curious, open-minded, social, mature and less phallocratic than American men, who would be more selfish, egoistical, pubescent and primitive?
Or are European women more liberated and emancipated, resulting in them having succeeded in getting men to do their duty - that is, kissing the pussy until it comes.
In any case, in Europe you will find that men will eat out a girl, just for her pleasure, without asking anything in return. In the U.S. this is, as far as I can tell, not the habit. There, it's a blowjob-centered universe.