Derek Pullem
Donor
An Egyptian Phalanx was a remarkable success. I don't think that Persians were somehow inferior to the Egyptians.
Actually Ptolemaic (Egyptian) phalanxes were generally inferior to the veterans / greek mercenary phalangites in a one on one (phalanx) fight. Where possible even the Ptolemy's preferred to use Greeks in the phalanx. It was only a hundred years later that Egyptians formed most of the phalanx at Raphia