But that too is a subject for another day. While there have been a few years in which DC has eclipsed Marvel sales or kept the horserace close, Marvel has been the market leader consistently, at least in sales to comic book shops.Īnd despite having a headstart with iconic successes like the George Reeve Superman and Adam West TV shows, the Super Friends Saturday morning cartoon, and Christopher Reeves Superman and Michael Keaton Batman film franchises, Marvel has also come to dominate DC in terms of media adaptations of its properties in the 21st century.