[sgtyork]

-They’re probably genetically as just smart as anyone else.

Don’t forget the role of in-breeding.

http://gatesofvienna.blogspot.com/2010/08/islam-and-inbreeding.html

[rodguy911]

From your link:

“Massive inbreeding within the Muslim culture during the last 1.400 years may have done catastrophic damage to their gene pool. The consequences of intermarriage between first cousins often have serious impact on the intelligence, sanity, and health of their offspring, and on their surroundings.”

Very possible.