Why is that among so many mutants in the X Men series Wolverine is the most loved one, is it Hugh Jackman's skills or is it the character???
In content creation conflict is the key word that sucks all attention. There are mutants more powerful than Wolverine, Professor X, Magneto, Phoenix to name a few. But what makes Wolverine truly interesting is the combination of his powers and limitations. Why are the Spidy and the Dark Knight movies more popular than the Superman ones, nobody can see himself/herself in a God, but can very well empathise with Peter Parker's teenage problems or Bruce Wayne's sorrows. Super humans who are nearer to human beings are more bankable, always have been.