"From its beginning, research on how and why people differ in overall mental ability has fallen prey to political and social agendas that obscure or distort even the most well-established scientific findings. Journalists, too, often present a view of intelligence that is exactly the opposite of what most intelligence experts believe." Further extract from the article by Prof. Gottfredson cited above.

Modern IQ tests are made up of about a dozen subtests which make insignificant 'impurities,' specific aptitudes or bias from social and educative factors.
For a variety of invalid reasons, people will continue to make inaccurate statements about the tests, such as those made above by Dick Greenhouse, Mrzzy, Dianavan and others, or refuse to consider their implications. The research of Prof. Gottfredson and others has gone far beyond speculation.

If Dr. Watson referred to a specific group, he, perhaps, is speculating in advance of current research. I know of no published studies which impose any sort of 'rank' upon genetic groups although individual differences in intelligence are clearly identifiable.
I have not seen any rebuttal of the arguments made by Prof. Gottfredson.