Having recently had this discussion (and as an avid Marvel fan) I’d like to see peoples’ arguments for both sides. The main one I can think of, is that Marvel is the more realistic of the two, whereas DC is the more idealistic of the two. Marvel has the heroes you can relate to, and DC has the heroes you want your heroes to be.
A friend of mine, however, said DC was more mature. I disagreed and stopped talking to him, but not for that reason, he was being annoying before that anyways.
BUT THAT’S BESIDES THE POINT. I’d like to see what the Nerd Problems followers have to say about this.