The age of these two guys is correct. I coached Mohamed Al-Garni last year, and in very short time he ran 3'39"06. He is a very motivated athlete, living for athletics, with the model of El Guerrouj. This winter Qatar signed the contract with Jama Aden, following my advice, that I consider one of the best coaches for 800 and 1500m. The strategy of Qatar was to look for some very young athlete of Arab language, and of course for a coach speaking the same language, for short distances, while for long distances Qatar Federation could continue with the Kenyan born, already in the Team (nobody new).
About Hamza, this guy can have a shining future. He is 16 at the moment, and is the photocopy of Hicham El Guerrouj : same morphology, same way of running, almost same face....
I think this guy can win the Youth Olympic. When I was in Qatar at the beginning of December, Hamza was not able running 20' slowly with Mohamed Al-Garni. At the end of February, he ran 1'49"2 during a test on the indoor track, paced by Balla (another new guy for 800m now under 1'47"). After 3 months, he was able running under 1'47", and also 3'42" in his first 1500m. Believe me, this guy can become one of the top runners in the world, in a period of 3 years.