Nar, Big Nog is a shot fighter. The guy may only be 32 years old, but all the wars over in Pride and earlier in his career have caught up with him. In his last three fights he's been taken into deep water, by Herring - who really should have finished him, Slyvia - not a noted power puncher, and finally by Mir who did finish him.
The Mir fight, was a terrible indictment of Nogueira's skills, all Frank did was throw, left straight, right uppercut, left straight combo's, Nog had no idea what was coming. He showed no head or lateral movement just really plodding about. Randy himself isn't a big puncher, but I think his boxing will be skilled enough to at the very least take a decision victory. I've however got my money on a second round stoppage.