[PvK]

Arco must've had a leader somewhere. How many of your cavalry were killed? Sounds like you wiped out 2/3 of them, but your men just had a rather unlikely moment of panic and retreated before the victory. Probably due to your own men shooting them in the back.

So the 30 light didn't defeat your army of 80 - your army of 80 was wiping them out when they got disorganized and retreated, probably due to friendly fire or some other unlikely setback during the charge. I imagine your own losses were quite light, while the enemy lost 2/3 killed - a setback rather than a real defeat.

PvK