I'm not sure where you're coming from. From what I understand of Elite's PvP scene thus far, the "big 3" are outmatched and underpowered against the ongoing FdL / FAS meta. Folks tell me to stay away from PvP in a large ship, because smaller ships will "run circles around me." I'm told that I'll just get decimated by smaller ships if I go and PvP in my Corvette.
Since I don't have much actual experience, I can't say one way or another which side is right.
Yes, the big 3 are currently outmatched by the FDL meta, but same goes for the FDL when facing a better and more experienced pilot in a small ship (FDL is a medium ship iirc)
But the biggest part of this community or at least the part that doesn't give a damn about advices from combat pilots or don't understand anything about PvP is still thinking that way.
That's how PvP pilots get flagged as cheaters, or combat-logging happens from side of the victim and why they start avoiding Open.
If most of the people grinding for the big 3 for survival reasons (cuz "I need to get a ship to survive in open" and then "Meh... grinding to have a chance in open...blablah...") started to learn combat maneuvers instead of trying to get rich as fast as possible, there would be so much less complaining about Open.