Summerslam too obvious?

So the ending for the Bryan/Cena match at Summerslam seems to be set in stone. Bryan wins with the Small Package, then Orton comes out at Vince's command, RKO, 1 2 3, new champion Randy Orton. It would tell a good story, and the blowoff between Orton and Bryan would (hopefully) send Bryan to the Main Event for good this time.

Now the one thing with this is that it seems too obvious. And sometimes when match results get too obvious, Vince changes them. I.e Jeff Hardy's attacker, Chris Jericho winning the 2012 Royal Rumble, and I'm sure there's others that I'm forgetting at this point.

Any chance that Vince goes full retard and changes the finish on us?

Although Jericho would have made sense winning the '12 Rumble, it was planned to be Sheamus all along.  So that one doesn't really support your argument.  
Anyway, they have been plowing forward full steam ahead with the ABC booking as of late, and there's really no reason to change it up.  Especially if they can clean up on bookmakers dumb enough to take bets on it.  The reason it's obvious is because it makes SENSE.  They've even been doing foreshadowing with Vince's desire to screw both Cena & Bryan out of the title and his desire to find a champion like HHH but younger.  So no, I don't think they're messing with this one.