Adam having written hashcash is certainly more Satoshi than the rest of us, as that was the inspiration that lead Peter Todd to implement Bitcoin. But no one is more Satoshi than Peter, since he actually was Satoshi.
Are you saying that based on the HBO documentary? Zero proof, only speculation.
There are no proofs in the world outside of pure Mathematics. What you are actually talking about is evidence, and there is quite a bit of that.