To some degree, see also Chris Evans' pedigree prior to picking up the Steve Rogers/Captain America role. Between the two Fantastic Four films and Scott Pilgrim vs. the World, he was sorta typecast into douchey, pretty/party-boy roles. Nobody really saw him as the charismatic Star-Spangled Avenger. But he knocked that one so out of the park that it's pretty much been his defining role (for better or worse) that a lot of people forget he was even in those previous films. And while he's been looking to move on from this stage of his career for some time now, just as with Robert Downey Jr, he's well aware of how people look up to him because of his portrayal of Steve Rogers, and that's very much shaped his persona as he's matured.