Reno
The Studio Ghibli Fanatic
Well, as stated, they excel in what interests them. So they may not be the 'smartest', but certainly smart in their areas that interest them.
Which is why it's especially important for an Asperger-person to find a job that intrests them. Unlike some people, I can't imagine myself managing to do a job for +40 years, even if the pay is good. I've been suggested that I should graduate as an English (and, possibly, Swedish) teacher after University, which is actually what I have had in mind.
I've chosen that regardless of the fact that the salary of a teacher in Finland is not great, I choose it because that's what I can see myself doing for a living, until I retire.