One fact quite clear is that the Americans were aided by the idiocy of Saddams son Quesay. The son's military ineptitude led directly to the slaughter of several units of the Republican Gaurd. His idiotic speech before the Americans reached Baghdad caused many units to drop their weapons and return home.
Nepotism is a universal problem but at its zenith in the Arab world. The King of Jordan designated his son who is the best of a sorry lot of the next generation of rulers. The jury is still out on Bashar Assad who looks lost in Syria. In fact if Syria does become a battlefield do not be surprised to see fragmentation.
Mubarak and Quadaffi want to bestow their countries on their progeny. The Arab armed forces in Iraq and elsewhere hand out rank on the basis of personal loyalty rather then on ability. The result is when they face a real army it is a professional soldier vs a political hack. America has its own problems with nepotism but fortunately the military is left alone. Nepotism is a oroblem that crosses party lines and we should strive to eliminate it.
The truth is that this nepotism and the strong man system ensure Arab defeat. Societies that do not reward its most able are corrupt and prone to failure. Yet the Middle Eastern scholars never point to the strong man / nepotism cycle for much of the chaos and humiliation that they claim is rife in thne Arab world.