Now as someone used Delphic as an example, that's fine if you're building up for one attack. Though you need to add up the attacks before that, You could use a wide variety of attacks dealing more damage before you even get to the Delphic. If you compare with just one attack, I'd say it's safe to say PVP will actually do more damage, but if you consider an entire duel and 5 different skills available to you, you can deal more damage. Knights would be a bad example for PVE set too, would they not? Being more dominantly a defensive class?
Anyways - If you wanna discuss PVE vs PVP I'd suggest someone make a new thread, OP was answered