Alright, multiple people have made the claim that One piece contains better developed and designed characters then FMAB...
Not only that but people actually have the delusion that it also contains a better plot...And is a less intriguing anime as a whole
Now my question is what is the common consensus, is FMAB (Full metal alchemist brotherhood)
1.Better in the aspects i have brought up than OP?
2.A better anime in a whole?
I doubt there is a single person who has watched FMA:B fully and call it a bad anime/manga. It is a masterpiece. Although it is tied imo with Code Geass as the best 50ish episode anime and 2nd/3rd on my favorite top 10 list.
Now with that said, One Piece is better, but what makes it better is not what you have listed. Of course the difference is very minimal. it is like saying would you rather have 10 or 11 dollars. What makes FMA:B better in plot is because it is finished. It had a very satisfying ending. You can't compare the ending with OP however because of the very obvious it doesn't have an ending. In that sense FMA:B is better.
What makes OP's plot better is how the world is ever expanding and everything about it is so unpredictable. There is so much going on and it is impossible to predict where the story is going right now.
As for character development and designed, it also depends. As for back stories of the main characters, they all have tragic pasts. The difference lies in the plot though. In FMA:B they are trying to correct their past and stumble upon something completely different where the ultimate goal gets their bodies back. In OP, they use their pasts and it makes them stronger because of it.
The designs in both are unique. I wouldn't say one is better then the other. They both fit their universe they are in.
