Like I said, Emporia doesn't really matter in determining skill because stating a guild can top a max-attendance defending guild is basically saying "They can perform the objective by map-hop spamming." Even Yurai's pre-nerf 680 Evade had to map-hop when a few Stumblebums and Invokers got in his way.
And as for attacking it's damn near impossible to survive even with max resistances against 10 players with classes and elements specifically designed to win by catching once and spamming the X-button for a few seconds. And even though Paradox captures castles and wins tournaments it doesn't state they're the best individual PvP'ers of each class like the topic asks for.
Basically we have to look into key members of Paradox:
ero: Well he's basically top Invoker by himself and in teamfights so that's obvious.
Primero: An extremely skilled Sorceror.
Sakuraz: A good contender for one of the top Destroyers.
xFomalhaut: Easily the best active Setinel.
LOVECOUCH: A downright great Summoner.
Zeela: Well we all know Zeela's twin skills. Zeela was top twin when Twins were first starting up in PvP. A "Veteran" who stayed around and still showed the newbies who can be on top.
And that's not counting that some of these people play other classes fairly well.
And that's just the beginning of examining a guild and seeing if key high-skill members can top our "Who's the best PvP'er" lists. I don't count Emporia because A 12 member guild sending a handful of guys to beat a 25 man defending team has been done before, it was named BadTouch and they did it to Ascension and Rebellion in their primes and Yurai basically solo'ed an Emporia Tournament without any merc help more than once and frankly I don't need any videos bringing up the megaphone wars that happened AFTER Emporia to point fingers and flood the chats for an hour after a fight. I'm entirely anyone could have topped Era's defending streak if Paradox wasn't downright invincible in tournaments.
Mocking the "Veteran's in their prime" is just going to lead to the drama that results in 90% of these "Top PvP'er" topics getting shut down. And Emporia/BattleSquare isn't a mode I can safely count because I go by my experience in 9-Round Elimination Matches being 1vs1 or a massive group-fight and basing a persons PvP skills off a 10v10 Flag-stall Battlesquare or a 25v25 Map-hop fest Emporia, Tournament or Castle Fight, is just silly.
Give someone like Nilla, Rim, or any other "Stuck in the Past" Veteran equal gearing and some time to become un-rusty and quite frankly I wouldn't be surprised if these people being insulted for quitting when bad patches came did very well. Not a 5-0 Washout but something like 5-3 or 5-4. Where win or loss it was fun and challenging and they'd do it again.