[Greenskar]

I think its the script, actor and almost always the director.

George Clooney is considered a good actor, but he made a terrible Batman due to a terrible script and a poorly conceived vision by the director. I have liked certain movies from Nic Cage like "The Rock", "Con Air", "Face off" and "gone in 60 seconds"...but I think he is a terrible Johnny Blaze, I don't care what script he gets. He may be a fan of the character, but that doesn't mean he's the right guy to play him.

I really didn't like Ben Affleck as Daredevil. Symbiote bought the director's cut because people on here were talking about how good it was, but we both still thought it sucked afterward, lol. Just not fans of Ben Affleck's portrayal of him.

So I guess it also comes down to matter of preference from fans at times, but there's just no arguing some actors nail the character. You'd be hard pressed to find someone say RDJ isn't the quintessential Tony Stark or Christopher Reeves the definitive Superman in film to name a few.