Well, vigilante comic vine usually has a focus on characters who take the law into their own hands. There's a lot of suspense and drama as they face various challenges and enemies. The art style is often bold and dynamic to enhance the action.
300 isn't a DC comic. It has its own independent creation and doesn't fall under the DC Comics universe. The story and characters are distinct from DC's offerings.
Vampirella wasn't a DC comic. She has her own independent comic series and background separate from DC's universe. DC has its own array of characters and storylines that don't include Vampirella.