Marvel's movies seem to be pulling aesthetically and thematically from the Silver and Bronze age (with a little bit of the Ultimates tossed in to modernize it). DC/WB on the other hand seems to be pulling heavily from the 80's and 90's when it comics to tone and stories adapted (Dark Knight returns, Death of Superman etc.). Could this be part of the problem? The Silver Age and Bronze Age style Superheroes are looked back one with nostalgia, but their has been a serious backlash targeted at a lot of the tropes and stylistic sensibilities of 80's and 90's comics. Even the "classics" from that era haven't escaped the backlash (The Killing Joke, Frank Miller etc.) I'm not saying the general audience knows a 90's comic book character from a Silver Age one, but they probably do notice the difference in tone. In the 90's edgy was cool, and extreme was a buzz word, but nowadays that aesthetic is mocked and ridiculed a lot. The term "Edgelord," was coined mock a lot of the tropes common in media from that time.