In early game they get the free towers that prevent you from doing any serious damage early on. Then in classical they are full of Slingers/Spearmans which is a very annoying army and once they get in Heroic they sit back at their Midgols with some Chariot Archers waiting for you.
And at the time you are attacking they make an Ansector and send you back to allow them make 70 slingers again.
Not only this but massed Slingers seem somewhat strong since with their very fast rate they can wipe any unit really fast, even very strong myth ones. Also with the pathfinding being bad in AOM many anti-slinger units seem to stuck while trying to kill them.
And once they get in Mythic they make those Catapults with really many slingers/chariots nearby making the screen full of arrows and slings.
What I mean is that, Greeks and Norse have some really good armies that require micromanagement and also seem logical. Hippikons with Toxotes from behind, Jarls with Axemans and some Frost Giants. You know what is going on in the battle. With Egypt all units look the same in battle and basicaly the control you have is minor.
Not to mention the Mercenaries that always kill your most important units (siege usually) at the worst times with their huge pierce armor.
Again I don't say that they are weak/strong, just strange and boring to play against. What you think?