The Omega
Completely Insane
BAH! We need no "other civs"! Hail the Mongols!!!!!!!

But I think this is more the fact that the AI knows not how to defend agressively, not your scenario.
So I'd say Qara-Khitai is all right in terms of balance. Except for the fact that they should not have Otrar, Smarakand, and Bokhara. Those should all belong to Kwarizhm. 
Omega and Lou, what about you?
, so don't expect much help from me.





