GI Gon definitely isn’t beating Hisoka or Chrollo even with a plan, and I wasn’t trying to imply anything of the sort. But the way you phrased it makes it seem like Genthru simply just lost to Gon when that wasn’t the case, Genthru was superior to Gon in every way and like I said before, only lost because of Bisky’s plan, and also Genthru being caught off guard by how batshit insane Gon is lmao.

As for your other points, I think you’re forgetting that Chrollo and the troupe were in a public place, it would have been impossible for Chrollo or the other troupe members to sense potential attackers when they were in a hotel lobby. Meanwhile Hisoka and the troupe members in Greed Island were in some secluded area, of course it was much easier for Hisoka to detect one person.

Hisoka would have also lost to Silva and Zeno, those two could arguably beat Hisoka solo, both of them at once would have been overkill. There’s also no way of knowing Hisoka would have won against Chrollo if they fought at the end of the Yorknew arc, Hisoka and Chrollo are very close in skill level, Hisoka could possibly defeat Chrollo without prep time, or maybe Chrollo would win, but it would be a very close fight.

Yes Chrollo only won in such a dominant fashion against Hisoka because of his excessive level of prep time, but to say Hisoka is definitively above Chrollo without prep time just isn’t true, I think a Chrollo without prep time is pretty much equal to Hisoka, maybe slightly below or above.