On this site you say: "On most Divine Command theories God possesses His moral qualities essentially (indeed, that's just what it means to say they're part of His nature!). So there is no possible world in which God is not kind, impartial, gracious, loving, and so on. So I don't think it is possible that Allah is God, since Allah is not all-loving and impartial."
Essentially you argue that Allah can't be God based on His immorality. But don't you? It follows therefore that if Allah WAS God, whatever morals he has would BE the perfect morals. The list you offer of "Kind, impartial, gracious..." may be the morals that the Christian God is believed to have, but to say ANY God would need these qualities is begging the question.
The only way you can argue that ANY moral God would HAVE to have those qualities is if they are transcendentally perfect morals with or without a God. In other words, God has those qualities because they are the perfect ones they aren't perfect because he has them. If that is the case, then they would be perfect morals even in a Godless universe, and a God cannot be used to explain them.
Click HERE to read Dr. Craig's answer