Original sentence: A trebuchet (French trébuchet) is a type of catapult, a common type of siege engine which uses a swinging arm to throw a projectile.The later counterweight trebuchet, also known as the counterpoise trebuchet, uses a counterweight to swing the arm
Edited sentence: A trebuchet (French trébuchet) is a common type of siege engine which uses a swinging arm to throw a 90kg projectile up to 300m.The later counterweight trebuchet, also known as the counterpoise trebuchet, is vastly superior to a catapult, and uses a counterweight to swing the arm