I disagree about the comment on French computer science education; I am continually blown away by the technical depth and effectiveness of my French colleagues (here at Google). Though maybe the problem is that a lot of the best ones moved here :)
Despite a not-as-good-as-the-best-US-schools CS education, they managed to make it to Google.
Similarly, assuming each country has the same distribution of talent, and that the US is able to brain-drain from the top of the stack, the foreigners coming from smaller countries will look even more competent. I know very few Danish and Finnish programmers in the US, apart from Bjarne Stroustrup, Linus Torvalds, so I'm under the impression from that sample that Danish and Finnish are amazing programmers :)