Re: Craig W. only claims to be Satoshi, because he knows the real Satoshi is dead?
Just an idea. If Craig Wright is NOT Satoshi Nakamoto, he would definitely risk the real Satoshi come up with a proof, that Craig is not SN. Is it possible, that CW explicitly knows about the death of the person behind SN, so he can make his claims without backing them up with a proof? 
Craig Wright assumes that Satoshi Nakamoto has not shown himself for more than ten years. Satoshi either does not want to prove himself, or cannot do this for various reasons. Craig Wright takes advantage of this. Of course, he takes a little risk, calling himself Satoshi Nakamoto, however, in his opinion, the risk is worth it.