Comic sales don't matter, no, but it says something when not even comic fans could get into him. Whenever people talk about Mar-Vell, what do they say? "Oh yeah, he's the guy that died from cancer". That's all anybody knows or cares to know about him, but when Marvel tries to give him a new series? It tanks. The last one tanked so badly that they made him a Skrull so they could go back to the drawing board. How appealing is he when not even the hardcore fans can be bothered to turn out for his titles? Ms. Marvel, on the other hand, is pretty damn snazzy. And unlike Mar-Vell, I read her title.