I would agree with most that due to history, DC characters are more iconic. But marvel is definitely catching up with not only the help of their films, but by showcasing marvel as a overall force within hollywood. Like a family if you will. I was watching an amc red carpet showing, and many of the actors of the winter soldier talked about how glad they are of being part of the marvel "family". I was taken aback because i've never heard anyone use that term before, but more than a couple said that.
On popularity, I think they are on equal footing now. In the mid 2000s, almost every random person knew of Spiderman, Batman, and Superman. Now, that list has extended, adding Iron Man as well. Top superheroes that MOST people know right now is Iron Man, Spiderman, Superman, and Batman.
I'm watching it right now (it's about half-way through) and it's good.
It is. It's interesting to hear Fiege talk about what execs were saying behind the scenes. We naturally like to think they all understand the magnitude of such success, but clearly they don't always do.