I doubt that. Most of the Australian aborigines are of mixed blood, and many of them look like white. In the Southern states of Australia, the aborigines are like 90% white blood and 10% aborigine blood. The pure-blooded aborigines are mostly found in the far-north and the central regions, but they are very few in number.
62 is the score for pure abo based on testing done last century when they still existed in large enough numbers. the mixed ones are smarter, the heavily mixed ones are only about as bad as african americans.