Unstoppable large onager crew

[♠ Thomas Cochrane ♠]

Ran into a crew of Selukid large onager operators, having dodged those little ICBMs, and closed to murder them. Problem was, a unit of horse archers, then 3 units of horse archers, then 5 units of Parthian Royal Cataphracts couldn't kill even a single man, using both arrows and cycle charges. with the 40 men chasing me around the whole battle slowly murdering my exhausted horsies, I ended up killing the rest of the Selukid army, then committing all 20 units against them. formation charging them with 8 units of cataphracts managed to kill one man each time, until then finally broke at 12/40 men.
Now I know the units have been rebalanced a lot from vanilla A:TW, but I'm not sure this is totally historically accurate. Please explain.

[swissdragon]

Ran into a crew of Selukid large onager operators, having dodged those little ICBMs, and closed to murder them. Problem was, a unit of horse archers, then 3 units of horse archers, then 5 units of Parthian Royal Cataphracts couldn't kill even a single man, using both arrows and cycle charges. with the 40 men chasing me around the whole battle slowly murdering my exhausted horsies, I ended up killing the rest of the Selukid army, then committing all 20 units against them. formation charging them with 8 units of cataphracts managed to kill one man each time, until then finally broke at 12/40 men.
Now I know the units have been rebalanced a lot from vanilla A:TW, but I'm not sure this is totally historically accurate. Please explain.

lol - well I'm certain this is NOT "totally historically accurate". Sometimes when you win against rebellions, the armies take that cursed Onagers hostages and merge them into their armies. When you encounter such a cursed army you get exactly what you described. Its just a bug and the honorable talented modding crew is on it already.

[KAM 2150]

Also I think there shoud be no onagers to begin with as they were not invented for another 500 years. If anything, they should be avaliable only to Romans.