Okay, better vocabulary does not make them smarter, but what they've got they're better able to express. Ever read Winnie the Poo?
In Sweden when I went to school we used the word multiplisera (mulitiply) .
The whole thing was called muliplicationstabellen
I haven´t noticed that we are more intellegent than other nations that just say 2times 3.
A friend of ours - a psycholigist - the son got that long word all wrong and told people his father was a psychopath.