It's been about two years now since they made it to TV and they've been both pushed to the moon.
Personally, I'm going with Cena over Orton. Cena's wrestling is more limited, but he has much more charisma, isn't as injury-prone as Orton, and it didn't take nearly as much time to get over as it did for Orton. And hey, I'll dare say Cena had the better match with Benoit. It's just unfortunate Cena's on the wrong show.
It's not looking like Cena will be the one to carry them to the promised land, though. But he's obviously a bigger draw/more talented than Orton.