They were throwing
pies at them, Bad. They weren't
trying to kill them. Also, they managed to knock them out still. With
PIES
A farmer's militia is actually a frightening force. A significant portion of the martial arts of the world were developed by farmers trying to defend themselves, and a huge chunck of the kung-fu armory were modified farming implements. Consider that a farmer has natural training with things like spears and pikes(because of their
pitchforks, not to mention axes, which were one of the most common medieval weapons regardless of what Hollywood will tell you.
This is, of course, completely setting aside how absurdly strong they are naturally. Armour is effectively useless against you when you can drag a house. Even AJ's basic kicks would be enough to seriously damaged armour, and that'll shake you up a fair bit. Add in steel weaponry and their a forced to be reckoned with.
Their added strength puts them on at least equal footing with Pegasi, and any semblance of military strategy that will get them in close quarters with Unicorns makes them a pretty significant threat.