I doubt very much too.
First of all, IQ tests are very subjective, they don't show all real opportunities of brains, just a part of them. But if we take their results as objective truth, it doesn't change the sense.
Races have nothing to do with IQ and success. Genetics plays its role but genetics is a much wider than just IQ tests.
Success depends on many factors, but IQ isn't the main.
and of course the topic has nothing common with a racist question!