The key is not to say one is better or superior than the other. For example, take a white man, a black man, and an asian man who are all the same height. In general, the black man will have the longest arms and legs at the same given height, say 6 feet tall, and the asian man will have the shortest limbs, but a longer torso. Remember, this is in general, and not so with every single case. And how about calf size? Are there any racial differances there? Remember, one isn't any better than another.