Question.

[Super Buu]

Originally posted by Kollifum
So basically the plot of DBZ is the same as Rock Lee's outlook on life. Or some other nerdy comparison.

Pretty much. All 'MARTIAL ARTSMAN GETTING PROGESSIVELY MORE RIDICULOUSLY POWERFUL-esque animes pretty much follow that premise, and Naruto is no exception.

And if potential is limited, how come Goku, a low-level soldier, becomes one of the most powerful being in the universe, outdoing Vegeta who's a friggin' pedigree warrior at every turn? :p And Bardock is able to change his ways and become good. It's basically saying that you're not limited by your birth. In the real world, of course, that's a crock of shit, but we're talking about a world where your bodily strength can continue to escalate exponentially with no limits whatsoever, as long as you continue training.