Arche Seleukia difficulty level?

[Dragannia]

I'm at around 240BC and I'm enjoying myself a great deal. The AI in battles sometimes, however, is really easy. I've destroyed 3 Pontic armies, each about triple my size with my army of Hetaroi and mercenary cavalry (3000 vs my barely 1000). Almost annhilated the Pahlava I'm still also trying to get the cataphract reforms - question, can you get them from Saka Rauka?

EDIT: Ha! Sab'yn attempted to take one of my newly conquered towns with a full stack army. Over 3000 light infantry, against my royal guard consisting of barely 500 troops, none of them at full strength. The closest was my Argyraspide phalanx, and I had a half strength Klerouchoi Phalangitai and a barely 30 strong Pezhetairoi. Supplementing them was a single squad of Thorakitai and a squad of Hypaspistai. I set the Argyraspide and the two non-phalanx units to defend one alley and the understrength mediums to defend the other towards my centre. Over three thousand Arabian infantry threw themselves at the two points. My Argyraspide and elite spearmen annihilated one stream and I immediately switched them to the other, where my medium phalanxes were holding surprisingly well, taking far less casaulties than my Argyraspide. I actually won by time out, but by then I was taking virtually no casaulties and would have eventually carried on to victory. It wasn't much of a battle, virtually no interaction from me, but it was epic. I love EB.