An Islamic state would require one (bad ass) ruler or a tight circle of family/tribe members.
There are too many power mad dictators in the Islamic world to make for a single state. Before they could take over the world they will fall to fighting between each other.
As for a number of states working together for a single cause? Well, we can see how that is working now.
I hadn't looked at it that way, but you are exactly right. These pukes can't even agree with each other. They will kill each other off before the reach stage 3.