Just ignore him. If he's around, find another good stick, team up. Avoid the headons, don't give him a shot and sooner or later he'll be running. Then he will squeal about it, write some silly stuff about him being gangbanged etc, enjoy his whining and move on. If he returns, rinse and repeat. Once he starts running away or pulling the plug, you can go back to other things.
Fighting him is fun in its own perverse way. He shoots really well, I would say even better then Judge, so if you offer him a shot, you will likely get killed. If he misses, it's usually vertical E fight with his flaps and engine tricks, which he has mastered in planes he flies, so he is rather dangerous. So likely you will lose, if you don't care about your score, there is some fun to be had. To make his life hell, bring a good wingman to whack him upside the head as he kills you
Despite all his claims he ain't so hot in 1 vs 2 or 1 vs 3.
Whole situation is sad, really. He flies a lot and it shows in his shooting and flying. He's good at this game, do doubt about that. If he wasn't such a flawed human, he would likely be remembered amongst the great ones. And this is what he wants. But everything he does ensures his legacy as a best known griefer of aces high. No matter how many 1 vs 1s he wins, no matter how many people he fights, he will never get what he wants .
Anyway, just ignore him. If he comes after you, find a friend, call on me if I'm around. We might die a little but fights will be fun and we'll likely make him squeal a little