It is a nice storyline for the main-event but the dilemma is stupid.
Orton has punted Cena's dad, nearly ended Cena's career and even at one point, attempted to kill him. It makes no sense for this to be a dilemma for Cena.
We could say that Cena's morals are so that he wouldn't even screw one of his worst enemys out of a lack of integrity when he's officiating. But considering Cena has gone wild in the past when superstars crossed a certain line (e.g. tried to end his career) and had no issue with hurting them, it would still make no sense.
So, in the end, the dilemma is stupid and makes no sense given Cena's actual character over the past five years.
The storyline is good however.