PVP is one or two fights, enter super curse for 10 mins go back to station get repaired... phase sequence lasers do damage no matter the shield...
PVE is 100s of fights in a row and never returning to station untill fuel is running out or you can't make any more ammo... BH PVE should be unlimited fights with shield cell banks never needed...
This is why people run different builds... Lasers don't need ammo... PVP Flack cannons, Plasmas and rail guns need ammo (unless you use plasma slugs mod but then you reject the other mods you may want)
So when spending hours in fight after fight after fight with never going back to stations many people choose to run another build, that means there able to not have to go looking for more resources to make ammo while floating in space...Spending time sitting looking at the synthesizer screen is also boring...
When PVE grouping you want to run a shield heal beam as well thats not required when PVPing so you add that beam weapon to heal the group ships shields...
Thats the easy most common reason to run a different build as the game play is now group help added ...
Though I have no problems using my PvP focused ships in PvE combat, you do a good job of highlighting how comically absurd PvE expectations are.
The perceived dichotomy between PvP and PvE could be largely erased if NPCs behaved in a believable manner, rather than as fodder happily lining up against the wall, waiting to be shot.
I love my Corvette but I'll be the first to admit it's absolutely useless in PvP against good commanders in smaller more nimble ships and that goes for all of the huge ships.
I win some, I lose some, but almost never does the the vette feel 'absolutely useless' to me, even against more nimble ships:
[video=youtube;NRilMNkY34c]https://www.youtube.com/watch?v=NRilMNkY34c[/video]
[video=youtube;bz8_Yv3Qwig]https://www.youtube.com/watch?v=bz8_Yv3Qwig[/video]
[video=youtube;LyX8oPhgPZ8]https://www.youtube.com/watch?v=YMeP6w6k-40/video]
[video=youtube;LyX8oPhgPZ8]https://www.youtube.com/watch?v=LyX8oPhgPZ8[/video]
[video=youtube;6vIlSR6BN6Q]https://www.youtube.com/watch?v=6vIlSR6BN6Q[/video]
[video=youtube;DVsDL9XIrkc]https://www.youtube.com/watch?v=DVsDL9XIrkc[/video]
[video=youtube;9cZrIy5gH3A]https://www.youtube.com/watch?v=9cZrIy5gH3A[/video]
[video=youtube;6gYTA9RKgSw]https://www.youtube.com/watch?v=6gYTA9RKgSw[/video]
That's all on PC, but the dynamic shouldn't be that different on PS4.
The vette/conda is a different sort of PvP challenge, and a nice change of pace coming from Vipers, Vultures, and FDLs. You have more firepower and durability, but it's more difficult to leverage, and it's trickier to extradite yourself from danger when things go south. Easy to over commit in a large ship, and often hard to keep up with a running fight in one, but they can still hold their own against smaller vessels, most of the time.