Incorrect. Naruto is basically about "Peace".. its whole focus is on Naruto Uzumaki getting peace. One piece sure it focuses on it.. but never uses it as the main focus.
That's exactly my point. Naruto focuses on peace with a little bit of other stuff sprinkled in. One Piece in the other hand, focuses on different morals and messages EVERY arc. Overall, Naruto basically has "Hard work will get you further than just relying on skill alone", "You can't have love without hate and everyone feels pain", "loneliness is a bitch", and "never give up".
Since One Piece is harder to just summarize, I'm gonna list the arcs and the message within them.
Arc where Luffy meets Zoro: Just because you know certain people or are related to certain people, that does not give you the right to treat others like trash.
Drum Island Arc: A family is very important. Without it, without companionship, your life can be hell.
Alabasta Arc: You shouldn't put all of the world's burdens on yourself. You have people who care for you and are willing to help.
Second one in Alabasta: There are gonna times when people spit on you, your dreams, and everything you stand for. However, you shouldn't take it: Stand up for what you believe in.
Jaya Arc: Dreams never die, no matter how foolish. If you have a dream, don't abandon it. Stick to it and work hard to get it.
Skypeia Arc: Just because you have power, that doesn't put you in a position to do whatever you want or step on whoever you want.
Water 7: Can't remember.
Enie's Lobby: The circumstances of one's birth or how they were raised shouldn't be reason to take their life. Everyone deserves a chance to live.
Also, Suffering is good on the Path to Carnage.
Thriller Bark: Teamwork is essential in life. Having friends who have your back makes life much more worth living.
Saboady Archipaelgo(spelling) Arc: When one is separated from the people closest to them, it can be hell.
Also, slavery is a terrible thing. No human is worth more or should have others as their slave.
Marineford Arc: Just because one's parents or predecessors have sinned greatly, it doesn't mean they too are guilty of that sin and should face the consequences.
Also, there is no real thing as justice. Justice is determined by way too many variables. One's upbringing, what circumstances(good or bad) one lived their life in, etc. When someone does something in the name of justice and it wrongs someone else, can it be considered justice? When does justice become "good" or "evil"?
Also, if the one closest to you is in danger, you have to put your life on the line for them.
Fishman Island Arc: This is just a shitload of morals.
So yes, One Piece doesn't focus solely on morals. It has it BALANCED with the story, action and humor, which is why One Piece is epic. Balance is something Kishi should try.