On his FB page Jim Starlin, never one to mine words, laid out out the relative participation levels for Marvel vs DC:
Just received a very big check from D.C. Entertainment for my participation in Batman V Superman, Dawn of Justice (Anatoli Knyyazev), much bigger than anything I’ve gotten for Thanos, Gamora and Drax showing up in any of the various Marvel movies they appeared in, combined. Guess I’ll finally have to sit down and watch the movie.
Although Marvel/Disney have been better about giving creators some participation in films and TV behind the scenes, the generally frugal nature of Marvel Studios is pretty clear here. A minor character in BvS is worth more than than three major character in a beloved ranchise.
BvS did make $800 million worldwide so it was quite an earner.