I think so too.
Maybe it would be OP on peasants but who cares. Another problem might be that you can ride around the map with the whole wave trying to aggro you, could it be fixed by making the bots not gollow mounted players?
Some waves like hoplites and pikemen (unrelated here, but also add assassins with daggers) to even the odds would be nice. But hey, who wouldn't like to have a huge cav charge vs peasants?