This is crazy!
There are no appreciable differences between the intelligences of Arabs and Whites. However, there are very big differences between what we have had to work with! As Diamond pointed out, we have had a lot of historical luck with the right climate and very fortunate crops and easily domesticated animals.
What has not been noted here is that the Arabs live in lands devoid of most natural resources. Countries like the US "had" oil and gas, continue to have huge amounts of farmland, water, forests, metals and other things. That's what puts us so far ahead, we have a variety of resources in abundance. The Arabs generally have oil (still) but little else. No good plants or animals like we do and nowhere to grow them.
Had the Arabs had the good fortune to live in our lands and we in their, the tables would be completely reversed.
That said, the Arabs will suffer an even worse fate than the Whites. When we stop bleeding them dry of their oil, they will have nothing else to sell to get money for imports and will have to go back to the old ways, which will simply not support anything like their current populations.
I feel very sorry for any country that only has oil as they will never develop any real wealth. In the new very localized world, you will have whatever is nearby and not more. Oil won't help if you can't manufacture the means to put it to use. The Arabs manufacture nothing because they have nothing to manufacture it with. They have been riding on our resources just as we have been theirs. Globalism is nearly dead and so is the middle class, pretty much everywhere.
-bbad