The topic question is legit.Of course the rider is the pilot in these jumps, but without equipment he will be without his plane. Therefore the prefered kite is a c kite like the Naish torch or Slingshot Fuel, where you will get a direct strong pull and can loop with power and confidence. Even think that Ruben went back on his Fuel in the competition because of this.
The race kites are damm good at boosting but dont have the same pull when turning them.
So a skilled rider also is skilled in making the right choice of equipment