I really don't see Orton overtaking Cena. He's definitely the number two guy right now but Orton's character doesn't and never will cater to the younger audience, where as Cena's character can cater to every type of fan. It's also very early in Orton's face run. He's receiving gigantic pops now but we still have to wait and see if can sustain these reactions over a prolonged period of time. Right now he's really at his peak popularity and everyone is hopping on the bandwagon saying he's passing Cena and better then Cena, but let's wait and see how the next year or so goes before jumping to too many conclusions.