So many blanket statements.
Realize that you didn't actually criticize the naruto anime as much as you criticized the manga art style. As far as your comment about the writers lack of ability in writing females. That's an attribute 90% of the anime/manga out there share. The females portrayed by many of these writers are fabricated for the male fantasy. Nothing about them even in the slightest is realistic. Very rare is a good female character written in anime/manga. Most of that shit is unapologetic fan service.
I never judge a lot of the manga I read on the art style. My favorite manhwa I am currently reading is Tower of God. You can check out that presentation for yourself.
Fairy tale and One piece have similarities sure. But the overall projects are very different. The world of One piece is always surprising me. Unlike Fairy Tale the direction of One piece to me is unpredictable. The writers take us on this great adventure, because the universe is very extensive, there's always a sense of anticipation for the next arc. The art design especially the environments, sky island, water seven, impel down, the island of gays, the island of women etc is mind blowing. The plot, the government, the navy, the pirates, the history, the powers, the warlords, the will of D... etc is fairly deep and filled with potential. There's a lot of shit going on and a ton of possibilities in the One piece universe. Besides the main character's story of becoming the great pirate king, there is a lot of power struggles with different factions in the background.
Fairy tale doesn't have these factors going for it, at least in any compelling way. It's fairly light hearted in character design and story. It doesn't have the same level of comedy or impact in dramatic moments. The characters in One piece are memorable (specific laughs). I can remember every final boss in each One piece arc, for fairy tale I remember two. The last one before I quit, and the reincarnating character with the tattoo. Pretty forgettable, partly because the writers build up this great villain only to throw him under the bus just to finish an arc. Down playing the entire mood that was presented before the climax. You wonder what was ever scary about him anyway.
One piece builds up every arc, with anticipation. The pacing is perfect for you to understand why this son of bitch needs to die. Some villains I straight up hate in one piece, the celestial dragons for example. There's a struggle and finally a climax. Everything is fleshed out that by the end the audience is satisfied, and is ready to continue the journey.
And the character growth in One piece is far far superior. It goes without saying
Fairy tale got old quick, because I had to compare it to a magnitude that is one piece. They say emulation is the highest form of flattery. But I say don't try to emulate something great only to half ass it.
Now you might like it, but like most people in this thread you're not objective about what you like or hate. You have no specifics and that's fine I guess.