Anyways, I'm tired of mentioning this in chatrooms and Starcraft games, but One Piece > Naruto. If One Piece had a good dub from the beginning, I'm sure it would be alot more highly regarded than Naruto.
I dunno, I think ur underestimating just how much ppl love Ninjas or genericness in AMerica. I mean the things that turn ppl off are usually the Pirate theme and the art style BECAUSE they're fresh and original. Not to mention it isn't a shallow actionfest half the time which will bore ppl who need to see shit exploding and heads rolling every single episode to not fall asleep. OP would definetly be really popular, even Gashbell was rly popular because it had a good dub,but I dunno if it could/would trump Naruto. The best it could hope for is to give it a run for it's money. Basically the reverse roll of what happened in Japan with OP being annoyingly popular and Naruto being the new kid who gave it a run for the top spot early on in the series.