This is a fact or your opinion? What signs has he shown? Every fighter's brain suffers some damage, but sounds like you're saying it was more than ordinary damage a fighter suffers. Can you verify this?
It has to be as good anyone's in boxing. At least i would think so. The other guy I think of when I'm thinking truly super-human chin is probably Andrade.
Well, you have no credible response. You could have just said such from the start to save wasted conversation. :rasta