I've only seen AA vs. AA once live, the only reason I remember it is, was a big pot, nothing on the board really, first guy to act goes all in on the river. The other guy takes time and is killing himself but decides to muck. He shows his aces in an attempt to show what a good laydown he's making....Of course the other guy shows HIS aces as he's collecting the pot....The other guy was humilated and left the table soon after.
You just don't get that kind of humiliation online.