Well, it is true that DC's characters are more iconic, at least the big three, Superman, Batman and Wonder Woman just because they've been around longer and have had more success in the past with teevee and such. Marvel has had a lot of catching up to do and in the past 20 years a lot of excellent cartoons and movies have shown up. And this is where Marvel is now spanking DC. Yeah, the Bat-movies have been successful, but it wasn't until Batman Begins, and arguably not until Dark Knight, that someone actually brought the character to life. Batman would seem to be a fairly easy character to understand, and if he isn't, there's a wealth of reference material there. And, what...they're rebooting Superman AGAIN?
No, Marvel has nailed it with Spiderman and Iron-Man and in the Hulk's second film. Yes, they had some misfires...Daredevil was a mess. But Marvel is creating a franchise juggernaut in which one reason to watch their movies now is to see how it all connects with the bigger picture of the Avengers, etc. It is fascinating that Marvel is able to pull off in their movies what is done so frequently in the funny books, crossovers and continuity.
DC has a long way to go and it will be a real shame if they don't get their heads out of their butts and fail to have the next Bat-movie and the next Superman movie and the Wonder-Woman movie (if it is ever made) and Green Lantern all build up to Justice League.
Your characters are bigger than Marvels? Well, let's see your movies get that big. Dark Knight was awesome, but may well have been a fluke. And some of the success was generated by people's fascination of Heath Ledger's Joker, but Batman was depicted very close to the comicbook character. Some moments were hauntingly familiar. The next bat-movie will surely be a let-down unless they just allow the strength of the character to come through again, but if they're depending on the strength of the folks doing the obligatory arch-villians they may be doomed. Story will be important and there's lots of great stories out there to pull from and Batman Begins and Dark Knight all had the feel of adaptations to those of us who are live-long Batfans. But still...many Batfilms later and it took that long to nail the character.
Spider-man 1 & 2 were awesome, Iron Man 1 & 2 were awesome, Thor looks good, Hulk 2 was awesome, etc and they hit the characters on the head, even if they couldn't stand for Tobey Maguire and Downey Jr to be wearing their masks for more than a few seconds at a time.