However when one gets to broadly defined categories e.g., intelligence, as was a subject of this poll/thread, the differences are insignificant. Mean differences in IQ among the races are not sustained when one considers high confidence levels e.g., 95%. That a flawed study on IQ differences, flawed on account of deficiencies in statistical sampling that make it unreliable as to whether the samples adequately reflect the populations they purport to represent, has been cited does not change that, even if IQ were a perfect indicator of intelligence. But it isn't. IQ explains a portion of intelligence and that portion is less than 100%. Moreover, only a portion of IQ is heritable.
In the whole scheme of things, the differences that resulted, to date, from evolution of humans are insignificant when it comes to broad attributes such as intelligence. If the poll were worded accurately, the correct answer based on the preponderance of scientific research would be that the races (a broad socially-constructed grouping, but a grouping nonetheless) are essentially equal in terms of "mental and physical competence (sic)." The differences among the broad groups of people cited for broad attributes listed are statistically insignificant.