User blog comment:Besty17/Eiichiro Oda and Masashi Kishimoto Preview Interview/@comment-972068-20150430220029/@comment-24.235.56.170-20150504175445

It has been stated numerous times in the Naruto universe that you can still use chakra even after you're "out", but you're doing so "at the cost of your own life". Consequences like never being able to do jutsu again have been mentioned.

This implies that ninja have a certain threshold that they will not pass, for fear of damaging themselves; so when a character says they're "out of chakra" it's unlikely that they mean completely.

This is further complicated by characters like Naruto or Sasuke, who have evil forces inside their bodies feeding them power. They both ran the risk of getting too low on their own power and being taken over by the ninetails or Orochimaru respectively.

Or he was just lying to screw with his opponent. Naruto is known for that type of cheap writing trick.

As for Naruto never learning mid-level jutsu, that was also explained. Naruto's over-abundance of chakra meant that he had trouble controlling his output, precision moves were more difficult for him than overkill moves like summoning a million clones at once. Spending his time trying to learn moves that don't use a lot of chakra was pointless for him when his innate abilities meant he never ran the risk of overdoing it.

Most of these plotholes, (even Moriah's zombies) can be explained away if you're willing to see some things as implied rather than explicitly stated.

I'll agree that Naruto is definitely not as good as One Piece, especially in terms of writing. But come on guys, it's not that bad.