RDJ is Tony Stark. He turned just another Avenger into a major character going forward from his first appearance in the MCU. Even in the comic books, Tony Stark took on RDJs appearance.
Hugh Jackman is very good at playing the role of Logan. But as good as Jackman gets, the comic book Logan is just rougher and tougher, and you can see the amount of experience he has fighting just by looking at him. I dont quite get that from Hugh Jackman.
"Well, it's not a bad game. It's made by Capcom, so how could it?" ~ AVGN