All this prepared-or-not-prepared talk is getting tiring. EVERYTIME someone loses, you could say "well, he wasn´t prepared well enough". It´s idiotic.
Outside of weird shounen-esque rapid power ups, you are who you are. And then it´s all about confidence. You keep walking a certain direction and when you run into something, you manage to deal with it or you don´t. The latter resulting in your death.
There is no kind of preparation that would ever satisfy everybody. That´s why Kite wasn´t incompetent. He THOUGHT he was prepared well enough. He wasn´t. So he "died". The same goes for Netero now. They´re gathering intel with those ghost bunnies, and when that´s done, they´ll probably enter the area. The THINK the are prepared well enough. If they die, they weren´t. If they win, they were.
The point is that overthinking it makes no sense for reality. Let´s say Netero was the strongest nen-user. So he sees Pitou and realizes "she´s stronger". There´s nothing more to prepare. He has two options: Engage battle and outsmart her. Or kill himself. Or wait for the Chimera ants to fully conquer the world, which is really the same.
Fuck "preparation".