I am going to put my vote in for the saba. They have no effective heavy cav, extremely limited heavy infantry, and only native hellenic pikemen. Their whole unit roster has not one apparent strength. I will admit that I have only played with them in the multiplayer battles and never their campaign, so I do not know if their short comings are made up for other ways. However, I have fought them in my Macedonian campaign and my roman campaign, where they preformed horribly.