I just don't get why they aborted what I thought they were going for originally with Cena/Angle: Angle knows he's a better wrestler than Cena and knows that Cena knows it. Then, Angle outwrestles Cena to win the title, forcing Cena to regroup and learn some new stuff for the rematch (at WM 22, let's say), where he puts everything he's learned to use to beat Angle and regain the title.
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Because Cena can't wrestle.