--Anime/Manga like kimetsu no yaiba or JJK are sure fire but they don't have the rewatch quality of naruto/bleach/one piece imo
--They are different than the Big three in that way ; Also naruto for me has always been superior to me both objectively and subjectively to one piece
--I cried when jiraiya died but haven't felt the same emotion with one piece back stories ; there something unique about naruto in that regard
1. Yep I watched both. Both are really good but the quality of those series focuses on the fights but the story kinda takes a back sit which is why Naruto and One Piece can be rewatched because OP and Naruto has a good balance between fights and story.
2. Without a question in terms of story, character development, themes, pacing, secondary characters, power system, so much more Naruto is clearly better at One Piece. One Piece is only better at settings and World Building however there has been no world building post time skip outside of the Reverie. There is no character development in One Piece because everything is like 90% plot driven. There are only two character arcs in the entire of One Piece story which were Robin and Sanji. And the Sanji one turned out to be a character regression instead of character progression.
3. Dude, ngl the first time I cried in any fictional work whether it be an American movie, show, anime whatever was when Granny Chiyo saved Garaa and the part where Jiraya was sinking down the river. In Naruto the story line has an emotional impact whereas in One Piece the story is about hype. People get hyped over Luffy being Joy Boy but there is no emotional impact to it which is why I like Naruto much more.