Hmm...Never fought Egypt when I played as Carthage, although I raised hell against the Romans. But with my experiance playing with Greek and Selucians, use phalanx. Best strategy, fewer casualties, (unless they get behind you...) and more kills. Sends em running everytime! And also use your Superior cavalry against their weaker, unarmored cavalry. (Not the chariots. Although elephants can be effective against chariots...)