In the short term, yes. Look at the Diamond top three hundred. How many of those comics aren't superhero, aren't licensed, and don't have a hit tv show/movie? Not many.
In the long term, look at the New York Times bestselling graphic novels. Guardians Of The Galaxy is the only super hero comic on that list. Persepolis is on there twice, Maus is still on there. Smile has been on there consecutively for over two years straight.
Fifty percent of the NYT graphic novel bestsellers feature female artists. Eighty percent are creator owned. Zero are licensed. It's a different market, and one he should focus on.