As far as Austin VS Hogan goes, Austin has said that it would be a terrible match because of their styles, being Austin wrestles "physical" (that's his words). On the other hand, Austin has said there are very few guys he would trust with his body at this stage of his life, Chris Jericho being one he would trust. I think there is much more to this than just those things, going as far back as Austin getting scrapped from working with Hogan back in WCW, and him wrestling Scott Hall at WM 18 and Rock facing Hogan at the event.