AoT anime art is really good.
About comparing the manga, from my view:
- from art perspective, AoT is really low quality compared to OP
-from world-building quality, lore, amount of character, AoT is really inferior. OP has so many characters and interactions etc. OP has various exciting islands full of different themes. AoT's world is boring. Just so-so. I'm a fantasy fan, so i really feel bland regarding AoT's world.
- from setting of story premises, AoT also is lacking compared to OP. AoT main premise is to survive and beat Titans. OP is a grand adventure, a really exciting concept.
- from shonen battle art, AoT is also inferior. OP is way better with its grand powers, lightning-fast depiction of movements and explosive clash of elements or mountain-busting sword slashes
But:
- from storyline depth and progression, i don't know what fiction is better compared to AoT. Not just manga, but fiction overall. AoT's storyline from beginning to end is really geniusly intertwined. Each plot reveal of plot twist is like a treasure.
- OP has minimal consequences. AoT has a strong consquence concept. What happens at earlier chapters give full-brunt impact on later chapters. The climax of consequences is how the world affect AoT's main protagonist:
- Eren Jaeger. Even if all characters in OP has their good characterization combined into one, nothing comes close to Attack on Titan's Eren Jaeger. He is a masterpiece of main character. He is very human, relatable and full of feelings. His point of view and emotional developed along with story progression. His actions are consistent with his thoughts and ambition, and once he makes his strategic move, it is literally-world-changing. The team, the enemy, friends, the community, even the entire world is affected by Eren's actions by long-term. Eren is the main driving force to whole AoT story, and it feels close to reality of a human. Its not battle-centric, its more of character-centric manga.
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If you value story consistency and progression compared to fancy world-building or many characters or shenanigans, AoT is a must read. If you're not into a heavy or tragic story, then it may not interest you due to its boring settings, premises, lack of easter eggs, or no fancy powers, no colorful or creatively-themed islands.
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Overall i cant say AoT is better, but going by character depth and story quality (not quantity), imo AoT is far better than almost any manga.
...until spoiler of chapter 137 dropped recently, that is.
I think you're looking at AoT with a really biased opinion, i think some points that you give it as a positive are not as good as you might think and at the same time the things you talk negative about One Piece are not as bad as you think.
The things about storyline depth and progression i can agree, but i can't agree when you say AoT is always consistent and progresses through arcs and themes, in fact i think inconsistency is the worst part about AoT. Sometimes you have really great and tight arcs, full of plot developments, twists and action, but sometimes you get 20 chapters of people sitting down in a room with a table talking about a bunch of stuff that isn't really relevant, it felt like the author was buying time to figure out what he was going to do next with the story.
Then we have the consequences part you said, AoT starts early on with the idea of consequences and death very heavily, but the thing is that Isayama keeps introducing new characters so he can kill them off, the ones that keep coming back have HUGE PLOT ARMOR, it's insane, there's nothing that can touch them, some of these characters sould've been dead as consequences of their actions time and time again, but the author always lets them go. I'm talking about Eren, Mikasa, Armin, Levi, Jean, Reiner, Annie and a lot more of those around...
And then we have the character depth / character development, and you use Eren as an example. I agree that Eren is an amazing character, the idea of putting a shounen protagonist in a Seinen world is pretty awesome, and let the world absolute destroy his world's view. BUT, just like i said,
inconsistency, AoT has a deep and awesome character like Eren, but at the same time has a bunch of fucking simple minded and boring characters like:
Mikasa - simple fucking Eren simp, does everything he wants or needs to survive, keeps following him around like a robot, never thinks for herself, even now by the end, after 130 chapters, she still would put the world in danger to save Eren.
Armin - the goody two shoes of AoT, is always right about stuff and everything he wants to accomplish he does so, from the spoilers it seems like he's about to do the Talk no Jutsu like Naruto, like he did many times before. At least Naruto was more consistent with his power of being able to talk people over.
Levi - the action hero captain, sould've died long ago, but Isayama keeps him alive for fanservice and nothing more, his arc and story has ended so far back.
Jean - the coward with leader skills, never develops, always stays the same, always doing what needs to be done, but always questioning if what they are doing is right.
Sasha - just a food loving character, that is it.
There's a bunch more, i could go for a while. There are a few characters that are pretty good, like Erwin and Reiner, but overall it's very
inconsistent.
Oda is much more creative with his characters, especially design wise. In AoT most of the characters either look the same or use the same shit all the time, it's really boring. I also like how Oda at least gives each character 2 contradicting things, their main characteristics and a gag that breaks those characteristics. Oda thinks about a lot more stuff when creating characters in the OP world, you have designs that are very different, you have different powers with devil fruits or equipments, you have sometimes really deep backstories that no character from AoT even comes close.
I just think you're selling One Piece way too short and AoT way too high. I really like them both, but for me One Piece is a much better series. And now with how AoT seems to be going about their ending...