You have me there. PvP is hard to get right, team based PvP is super hard to get right.
I can point you at companies which get single player, and how to do community engagement.
I can show you companies which are gods at complex systems, etc. but PvP?..
It is hard, and people are got great at it.
Oh wait, I know ONE game which had it super right.
“For honor” was good, the fights were EXTREMELY skill matchup, but they got the different classes and fighting styles really down. Which is a thing, the moment that classes get involved it is hard to balance.
If you are after larger scale fighting I think Amazons new MMO may also be good. I have high hopes there if MMO is your thing.
They sure as hell have the resources.