I think it's defined by the way they act. Cena panders to the crowd. Guys like Miz, Del Rio and Ziggler are openly hostile to the fans, thus 'heeling it up'. A guy like Cena even tries to win the Cena haters over - he's an ultra-face
......And that's the bottom line cus stone cold et said so ....
Picture me like this....
Not removing until:
Drew Mcintyre wins a singles match on Raw or Smackdown (20/10/11)
John Cena Turns heel (26/10/11)
Cody Rhodes wins a world title (27/10/11)
PREDICTION CONTESTS TOP 3
Survivor Series- T6th
Night of Champions - 17th
Vengeance - T11th