There is a positive correlation between dyslexia and entrepreneurship according to at least one study that has shown dyslexia more two to three times more common among entrepreneurs than the general population. http://www.cass.city.ac.uk/media/stories/story_8_45816_44300...
In my experience working with dyslexics they are more persevering: some tasks that are easy for many require more diligence and practice. It's a habit they develop in childhood to survive. I think this habit may be one source of their entrepreneurial success.
"Spelling errors — Because of difficulty learning letter-sound correspondences, individuals with dyslexia might tend to misspell words, or leave vowels out of words." -- wikipedia
so i guess it's only natural more spelling errors lead to more achievements ... maybe because s/he doesn't waste time being a grammar/spelling nazi
imho it's as relevant as predicting an asian engineering student success based on english SAT