Khuzait are strong in auto-battles due to their early cavalry, but in real battles they can get overwhelmed easily if not careful. I feel they are balanced because their armor is lighter than other equivalent tier troops, and once their horse archers are out of arrows, they essentially drop by 2 tiers in combat ability swapping to melee, aside from the noble troop line. The trouble with them, as stated already, is their map speed. They can outrun any other faction due to their high dependence on cavalry.