>>3631098IQ itself is pretty inaccurate, I'd say you could add or subtract 5, or maybe more points easily and you have to consider the statistical error, also arround +-5. Therefore you cannot deduce from this map that Italians are on average smarter than Portugals. That's the most probable, but it could be the other way arround. Only things you can be almost sure that map tells you is that, for example, people in Africa have n average less IQ than people in, let's say, Australia. Such information is obvious, given that we know that most people in Africa aren't educated, or even literate. So, I don't see many conclusion we can get from this map.
Sorry for my English, I am tired.