One Piece Episode 618

[DarthEnderX]

It's kind of tricky, really. After crossing over to the new world, our expectations for the capabilities of new enemies is so high, that for Nami to be able to solo one would just seem insulting

Not to me it doesn't. The whole point of them spending 2 years gaining abilities nobody has ever seen before. If they COULDN'T take on the 7th or 8th most powerful member of any given group, I'd feel as though they'd wasted two years of their life.

Edit: Also, sure, everyone has trained hard the past two years. But unless you can say that Nami and Usopp are stronger now than Luffy was two years ago, then it's still not enough for them to reliably solo new world enemies.

That implies that everyone on everyone ELSES crew in the New World is ALSO stronger than Luffy was two years ago, and that's simply not the case. The Whitebeard War was jam packed full of pirates that weren't as strong as Luffy that all came from the New World.

I don't see why the power gap between the leader of any other group and their 7th-8th most powerful members would be any smaller than the power gap within the Strawhats.