In Dracula fanfiction, characters often have a more complex and dark development. Dracula himself is a very old and powerful vampire, and other characters are usually in a constant struggle against his evil. Their growth is often about facing their fears and trying to survive in a world full of horror. In Twilight fanfiction, character development is mainly about the relationships. The characters, like Bella, Edward, and Jacob, grow in terms of their love for each other, how they deal with the challenges in their relationships due to their different natures (vampire, human, werewolf).
In my opinion, it's not really fair to compare their popularity directly. Dracula - related fanfiction often delves deep into the roots of vampire mythology, with a focus on horror and the darker side of the undead. Twilight fanfiction, on the other hand, is more centered around the romantic relationships between vampires, werewolves, and humans. They appeal to different audiences. Some might enjoy both types, but they are so different in nature that it's difficult to say which has more popularity in the overall fanfiction world.
In many cases, Morbius isn't considered bad. His character is complex and has various motivations and actions that can't be simply labeled as bad. It's more nuanced than that.
In the comics, Morbius is a complex figure. He struggles with his newfound vampiric nature and often finds himself at odds with both heroes and villains. His powers include enhanced strength, speed, and the ability to fly, but his condition also brings moral and ethical dilemmas.
It depends on your preferences. Some fans think Morbius is great in the comics for his unique powers and complex character development. But others might have different opinions.