Didn't Pitou straight up say that Adult Gon is on the same level as Meruem. She was thanking god that she'd be the one killed by him and not the King.
I would not be surprised that Gon can easily tank Netero's attacks. Gon has insane inhancer Nen at this point. And his speed is insane too. Pitou literally could not do anything even if she attacked him from behind at full speed, he still dodged point blank lol. She could not react to his attacks, same as she could not react to Netero's I guess except Gon attacks fucked her up way more. And we haven't even seen much from Gon, because Pitou was literal trash for him.
Gon does not have Meruem's intelligence, but he's pretty battle smart still, and he's got a Hatsu while Meruem had nothing which could be useful to at least perform some ranged attacks with Paper maybe or something.
The thing is in a battle of Nen compatibility is a really big deal
Gon has more raw power than pretty much anyone in the verse but he couldn't be anywhere near as durable as Mereum
He's smart but Mereum was literally created to be a God amongst his race. He's a genius in just about every way, outsmarting and beating world level strategy game players after just a few games
To beat someone like Netero you have to be AT LEAST about as fast as Mereum, as smart as him, and as durable as him (if you wanna try the same tactic)
Gon has ranged attacks so he'll definitely have more options against Netero but I don't really know what that would do. Netero can easily block those and (from what we've seen) his statue is nigh indestructible
Plus iirc doesn't Gon have to stand still to use Jajanken? That's a huge disadvantage especially against someone like Netero lmao
I think true Prime Gon would beat Netero but Adult Gon (Gon with his adult body and potential but the experience of a child) would lose to him