That isn't interesting, it's what's actually GOING TO HAPPEN. Him cashing in at this point would be a complete waste of his time. It was funny even thinking he had a chance against Cena. But after the performance he put on tonight of being the best damn mop a floor could ever meet, his chances of winning against Brooooooooock Lesssssssssnarrrrrrr are even more miniscule.
He might as well burn the papers in the briefcase in the center of the ring on RAW, and do his best Jimi Hendrix impersonation while he's at it.
EDIT: Honestly, Lesnar should just retire on RAW, taunt all of the Cena fans, then leave the WWE with the "last laugh" win over Cena. I honestly don't want to see him face Cena again, or anybody else, for that matter. His complete global saturation (of sweat) over John Cena at SS was so gratifying, that seeing him do less against anybody else would only tarnish his victory. Seriously, go out on the greatest high note there ever was, Brock. Let the up and comers shine now that they don't have to be afraid of Cena anymore.