I guess it is all how one grew up. I didn't even know Marvel had characters other than SpiderMan and Capt. America as a kid. It was all Superfriends, all the time.
But again, I have the luxury of being the target audience of these studios. I know "WHO" the characters are, per se. I don't know every origin story so when they re-write it, I don't get flustered.
I think DC needs to jump things off with a Justice League type movie, then see which characters test well with the audience and go from there. And I mean the original Justice League that my generation is familiar with, not the new school, Go back to when Aquaman had human hands, Dick Grayson was Robin, Hal Jordan was Green Lantern, that kind of stuff. I'm not calling for the Wonder twins or Wunder-Mutt, just some old school characters..heck let them fight the Legion of Doom. Just don't let the guys doing the GI Joe movie do it...
Doesn't Marvel have a character that eats entire planets? Which "Grounded" super hero does he fight?