How to tell if a pilot is... cheating?

[Assist]

I know that you guys don't want posts about specific players so I'll try to keep the name out of it.

Let me preface this by saying that I am without a doubt the worst pilot in the game. If I kill another air vehicle using my ESF it's either from lock-on rockets, crashing into them, or if it's an infantry unit spamming them with the PPA and then ramming myself into the ground.

There's a TR on Waterson server who has me very skeptical. I've been killed by his liberator more than a few times, and most times I don't even see him in the air when I look for him. He's always at max range and I've seen him wipe out 6+ ground vehicles while everyone looks for him. I've been writing that off as the Liberator being ridiculous and needing a nerf. I figure I cannot see him, he's either really high and far away and somehow is spotting us, or something is buggy with the game.
My skepticism comes from his Mosquito 'skills'. He picked off 2 other ESF around me(people in voice comms with me) and none of us saw him or knows where he was at the time. He then killed me, while I was banking around a corner with afterburners on at full speed(serpentine pattern failed me). All three of us he killed with 1 clip of his main gun on the Mosquito, he never missed. After this happened, he then proceeded to use the Mosquito, somewhere out of sight again, and take out 2 Magriders using the main gun on the Mosquito(Rotary?). Once again, no one saw him. Then he finally showed up, coming in full speed over the wide-open base, and killed me on a Flash without damaging my Flash, using the same main weapon on the Mosquito.
So, after all that, and being confused and raging like a tard, I reported him. There's no way someone has that kind of aim, in an ESF, to not only kill another ESF that is doing their best to avoid damage, and kill those vehicles without being seen, and to kill a player on a flash without even damaging the flash. Or is there?

Like I said, I'm a horrible pilot, but I have a general idea of the limitations of player skill and this specific person has really made me wonder. I've seen this guy only once on the ground, he was afk inside a spawn room. He plays as much if not more than I do and I am 100% sure everyone on Waterson knows who he is.