I feel like the whole last fight with Madara and Obito taking turns as leads and nothing really happening, it wasn't planned this well. It was epic, sure. If it was a Bleach fight I wouldn't say anything, probably. But it is Naruto. You can have Jiraiya and Naruto vs Pain, done in stages and with proper dramatic structure, and with all sorts of emotional ties to the characters we care about, or Sasuke vs Itachi with the subsequent reveal, and then drop the ball with the final fight. I suppose Obito's story was decent, and Madara's into was done great, but come on, that fight was hundred+ chapters long unless I am mistaken. I think Kishimoto didn't try hard enough. The whole war arc felt like that.
Sure.
Okay. I mean, it also kinda depends on what we are talking about. If you mean "how good this fictional world is", then it is one thing, if it is "how well the features of this worls are introduced", that is another. The later is almost always done by big sections with explanations and even infographics. And it is to be expected. Manga is a visual genre, it relies on the pictures to tell a story, and technical info about the worls doesn't really translate into pictures that well, I feel like. Maybe there is a way to do it smoother than what OP does, but I don't remember examples. Novels have easier time there, blocks of text don't stand out there.
But if you meant to talk about the worlds themselves, I think it is fair to compare anything, pretty much. OP isn't the greatest fantasy world, for sure, but it is decent I think. I would say the same about Game of Throne's world. Tolkien's world is way richer, it is trully a masterpiece. But yeah, you are right, the world takes so much place in the books, they feel dry. Which is a good thing I think, cause everything but the world in LotR is childish or silly, to a degree. I've jest re-read is a few months ago and I was surprised by it. It is not nearly as great as I thought it was back at school when I was reading it the first time xD
I won't even count power scaling as part of the world. Naruto's world is what, ninja villages, chakra powers, some history and that is all?.. If you take just the pre-time skip part, it is pretty okay. The chakra power made some sense back then, the world consistetd of Konoha and alien villages in the background, the history was just the the Fox, Madara and old Hokages, more or less. It was all concise and sort of dense. But, by the end of the series it lost the cohesion. Chakra became just magic, it could do more or less anything. The world no longer made sense. Who rules the world? How do the nations live? Any details about what they did during the ninja war? What was going on with the world before the ninja war? I can go on and on, and the answers to my questions will not be very detailed or satisfying. It was no longer dense, you have a dozen gaping holes for every bit of info the story provided. That is a problem.