Avengers was a build up starting with Iron Man, Thor and Captain America. It needed time and several features before it could become a reality, so Avengers is Beyoncé or Rihanna (who have many influences). X-Men started a revolution of comic book movies and it's the oldest franchise, so it's Michael Jackson or Madonna.
You mean that x-men has more lgbt fans cause they identify themselves with the mutants being outcast seeking acceptation ? Cause otherwise im confused cause by the end of The wars movie Avengers will have complete outgrossed x-men its movies.