I should rephrase. Point is, the A-10 is a ground attack aircraft, not a fighter aircraft. And it isn't meant to dogfight, therefore an A-10 pilot is not a fighter pilot.
The F15E, F16, and F/A-18 are all multi-role, meaning they are designed to dogfight at some level. The A-10 was designed to do one thing, and it's not dogfighting.