It's all speculation, of course. But the newer theory makes more sense to me. You can draw your own conclusions.
What is it about the newer theory that makes more sense to you?
You spent a fair amount of time and energy finding the article and asserting it is important. I would like to know how you go about deciding which of two competing scientific theories is better.
I'm kind of curious about Piltdown Man also. How do you, personally, know it is a hoax? No one ever confessed.