[Dr Kain]

There's a difference though. Green Arrow is still his own character. The Avengers are just fine in the movies because they have thier own movies to be developed in first.

However, X-Men does not. X-Men barely resembles the comics to begin with, and constantly changing the timeline doesn't help manners. It's not like there is a Cylcops movie, a Rogue movie, a Jean Grey movie, etc. Plus, the movies have gotten so many things wrong from black leather suits to no costumes at all, to things like incorrect histories and characters.

Like Magneto, for example. First Class is my favorite of the X movies, but they screwed up Magneto's motivations because it was a mutant that imprisoned him during WWII, not a regular man. Thus, his reasons for hating humans makes no sense. Then you have things like Rogue not being Mystique's adopted child, Nightcrawler not being Mystique's son, Scott and Alex's dad not being Corsair or even having them be orphans, to Sabertooth not even having any relationship with Wolverine.