Everything Eb said was absolutely true. Any pegasus short of a lightly-armed Air Superiority flyer carried a spear and knew how to charge with it just as the specialist did -- but they were trained to veer off at the last second, leaving the weapon stuck in the enemy and grabbing another one from their back, or switching to hooves if they ran out. With all the plating Artemis had on, it was easier to just bowl right through -- and on a pony-sized enemy, the collision with her bronze-plated body was almost as damaging as the tip of her pole-arm.