> You can not say 'all Asians are short' nor 'all Africans are black' as they simply aren't all, nor does the precise number or accuracy give you indication about the traits of any single person. Watson is under the blatantly false impression that his statement have statistical merit when they clearly don't.
This is an intellectually dishonest interpretation of statistics and/or his claims. Saying "all Asians are short" is stupid, but saying "Asians are shorter than Europeans" is not; my interpretation of the statement is that Asians are in average (or even better, in median) shorter than Europeans, not that all Asians are shorter than any European (btw, I don't know if it's true, and I don't particularly care, but it very well could be, and it very well could be the reverse).
About race and intelligence, I don't think it's a controversial claim, at least in the US, that Asians are more intelligent than whites, who are in turn more intelligent than blacks. Now, the reasons for this are varied, and might nothing to do with race, but with history (e.g. Asians are descendants of immigrants who were driven to succeed, while blacks are descendants of slaves, who grew up in poor neighborhoods). Why would you object to the second claim, but not the first one?