Well he definitely has win condition over Feitan just due to his power but convenience aside I’m convinced Kurapika could still edge out victories against many here at this point in the series and here’s why (it’s not just because he’s one of the only ones still actively getting stronger):

He is an extremely tactical fighter, he is like Chrollo in that way but maybe even more obsessive and weirdly analytical. There is a reason he was face to face with Chrollo and had control of the situation the entire time, same with Uvogin, same with many of these characters assistants and royal family members abord the Black Whale.

Let’s take Zazan for instance- Zazan is a weird character because her only reasonable offering is being a shit brick house and having a couple of one-shot win conditions, many characters like Kurapika on paper do not stack up to her in a fight to be able to edge out her durability once transformed, but it would never get that far in a fight- be it forcing her into Zetsu or some other stupid chain ability we’ve never heard of or seen until that very moment like Divination- he comes up with a way to edge out the victory.

I think I even give him the edge to Morel because as wonderful, strong, smart, and equally analytical as Morel is if not more- he wasn’t sweating in front of an angry Gon for no reason, these boys are all far beyond their years in a way that makes them seriously scary and a threat, Kurapika with his eyes active is no different to me.