1701D has my thoughts....
Yep there were some good Marvel movies, blade, spider man etc... but then they started becoming hit or miss. So Marvel Formed Marvel Studios... and started trying to get some consistent quality. Now even if they licensed a property out, Marvel Studios seems to be at least trying to stay involved in process. Previously I think they just let the studios do what they like.
Destructor... I switched gears a bit... sorry I see how it could e confusing. Of course I know what are DC characters and Marvel Characters... I was just commenting that I felt runs like Batman, starting with Batman Begins, started showing that super hero movies could be more serious.
Blade still holds up... but by the time you get to blade 3 its a bit repetitive and tired. The tobey mcguire spiderman movies were pretty good too.
But DC or Marvel, there are a long list of pretty bad or mediocre superhero movies...
Most of the early superman and batman movies, while fun at the time just I find just don't hold up.. and the list goes on... punisher, Daredevil, Elktra, Ghost Rider, howard the duck, Swamp thing, Fantastic Four, The first judge Dread...
I don't think DC has figured out how to try and manager their brand like Marvel has... but I was speculating that Marvel actually got the idea around the time Batman Begins came out and it may have been a catalyst for their current (winning) strategy.