Well, there is certainly something to be said for rank NOT being the best judge of a pilot's skill. There's just too many variables. However, I think there is a cutoff somewhere, I don't know a particular number- perhaps 500, perhaps 200 or less, where you are in elite company regardless of rank calculation ideosynchrasies.
For example, I'm milking about a 3 k/d this tour. This wasn't particularly easy to do. Mostly, I pick my fights, I don't generally throw myself into furballs I know I can't get out of, and I will egress a fight if I'm getting truly disadvantaged. I average about 100 kills a tour it seems.
Last night we were having a pretty good furball over a bish field. The rooks were just killing us with a cv just offshore. There were red icons absolutely everywhere, and it was one of those fights that once you get off deck, you're fighting- if you don't get vulched on takeoff.
At any rate, after getting roped and killed by Lute (again, and man was that a rookie move on my part), I upped a Nik and landed 4 kills. Right after I landed, I was watching from the tower at the horribly outnumbered bish putting on a desparate fight. Then the fighter hangers got dropped. I saw one fella- I'm pretty sure it was REVRAND. He was in the dogfight, got shot down, took up an IL2, got vulched, took up another IL2, got vulched, took up another IL2, and so on. I don't even know how many times.
Me, I decided to look for another fight. But then there are guys like this who will keep upping and keep fighting, and who cares about the K/D anyway?
So I checked Rev's stats, well over 500 kills, something like 400 deaths, so about a 1.1 K/D. He has a 600-ish fighter rank.
Could I beat Rev 1v1 on any given day, same plane? Hard to say. I'd give the nod to him simply because his kills in one tour are about as many as I have since I started playing 6 months ago. But, I'd also argue that the 'Any given Sunday' could apply as well. On any given day, I might be good enough to capitalize on a mistake and beat him.
Dedalos is a perfect example of someone that beats me regardless of plane. It just doesn't seem to matter. Everytime I've ever run into him in AvA I go to the tower. The plane is irrelevant.
Having said all that, crap happens. Heck, I even shot down SkyRock once in his F4U-1C, and I'm pretty sure he owns me. But I caught him with his back turned and well, if you spray enough 50 cal out there some are bound to land.