I can't recall which country they were chatting about.....
For any given sample population, the average is, by definiton!, always 100 (the center, high point of the Gaussian distribution curve). This also holds true for Dubai.
Of course, if you take the global population as your sample, then the Dubai subset may well be towards the lower end of the curve, i.e. IQ < 100. But that wouldn't be the average Dubai IQ, but rather the IQ of the Dubai population as compared to the rest of the world. quod erat demonstrandum...;-)