User blog comment:Mr. Xemnas/Spider-Man in the background as Ironman takes the lead/@comment-7215662-20130317002453/@comment-2198188-20130317053828

Interesting analysis, but I feel somethings are different. One Iron Man is still not that mainstream, I think the hulk is still a bit more. And it could be the change in test. People like darker series, so Batman is probably popular, because of that.