Charriots just own cavalery.
Especially generals.

The trick is, every time they would just knock down a foot soldier, the horse dies instantly. Even if the charriots are routing, they still kill cav. All they have to do ist touch them, the scythes will do the rest.
What makes this so powerful is my assumption that this totally ignores hitpoints. So a general with 7 HP dies just as fast as a light cavallery. This makes them totally lethal general assasins.

They are the ideal cav-counters.