Resemblance not that important
I think if Fincher had wanted Bale in the role, that the physical resemblance (minor in my opinion) to Jobs had little to do with it. Good actors will capture the spirit of the character so that by the end of the film you'll see a physical resemblance where before none existed. I never looked at the late Phillip Seymour Hoffman and thought, wow, he reminds me of Truman Capote, until he played the part.
I think if Fincher had wanted Bale in the role, that the physical resemblance (minor in my opinion) to Jobs had little to do with it. Good actors will capture the spirit of the character so that by the end of the film you'll see a physical resemblance where before none existed. I never looked at the late Phillip Seymour Hoffman and thought, wow, he reminds me of Truman Capote, until he played the part.