>>10429865John Cena killed his career out of spite. Sure he let Theory get a (unclean) win over himself, but he completely castrated any gravity a win or loss might've had for the most important match of this young star's career.
That and he also sat on his ass at home never bothering to promote the match or letting Theory recover image wise from that burial promo Cena himself produced and left an inexperienced Theory to carry it by himself. All this in an age where going off script is career suicide for young stars, because the control freak management will actively bury them for it.