My suggestions :

- Decrease the range, the ranged attack, the melee and the speed of chariots. Chariots were replaced by cavalry for a reason, and it was that they were unstable, and slower and less maneuverable than cavalry. The stats should reflect this.
- Remove the armour of desert axemen, and partially compensate by raising their defense skill. Desert axemen are overpowered, and on top of that, the picture is one of a shirtless guy, so all this armour feel just wrong.
- Slightly raise the power of the greek cavalry.