Since your question is about salaries, it's not clear why you mention the type of jet they fly -- seems that your question would apply whether they are flying G

Since your question is about salaries, it's not clear why you mention the type of jet they fly -- seems that your question would apply whether they are flying Gulfstream Business Jets, or Airbus A380's Though I think you're more at risk on your drive to the airport from the truck or bus driver in the next lane that earns less money than a pilot.