Starting this thread is a bad way to find this out, because I'd expect from people to overestimate their creativity. Especially when using a vague definition such as "art", because it would allow people to fit many things into that and the result would be that everyone would seem more artistic than he actually is. Even from the answers, you can see that.
My personal expectations would be:
I'd expect interest in logical things from Aspies, therefore I'd expect higher than average interest in maths (although interest is different from ability, it still has a significant effect on ability).
Also, dyscalculia is co-morbid with Aspergers (I'm not sure), so that would reduce the number of people who love maths, although dyscalculia is compatible with good math ability, it might discourage it.
Music ability should be irrelevant. Probably same goes for ability to draw.
I'm not sure if fascination in arts is variable between people, and if yes, then what determines it. I know that some of the forms of art are equal to the opposite of social awkwardness, and we can't even appreciate them.
Also, latent inhibition is positively related with autism and negatively related with creativity, therefore I'd expect Aspies to be a little less creative than average people.
Overall, I'd expect more Aspies who prefer maths, related to average people who prefer maths. This poll can't test that, because it might be so that 80% of the average people would vote "art". Or they might be 40%, but the point is that we must compare our results to that number, and we don't have it. Just comparing the number of votes for the first option to the number of votes for the second option won't work, unfortunately.