The difference is the DUI had not been vetted and Keating has.
That "old news" ploy only works for democrats. The media will destroy McCain against any dem. They will find plenty of "fresh" angles on Keating. We both know they are there because Keating was stinky as all heck.
He will not have any idea how to handle it because he has become accustomed to HRC level kid gloves from the media. That will end the moment he is the Republican nominee.