Anakin's redemption takes place in the original trilogy, but that it not what the entire trilogy is about. Only ROTJ includes his redemption. The story that covers all 3 films is Luke's ascent to Jedi Knight, and the Rebellion against the Empire. Lucas didn't start calling the redemption the arc of the trilogy until 1995, and it isn't the arc of the trilogy. It's the arc of part of Return of the Jedi. And as far as I'm concerned, Anakin is a traitor. Tragic, yes. But accountable for his own actions, and I hope the films don't point the finger at anyone else except maybe Palpatine. I'm sick of the asusmption that it was all because Obi-Wan didn't train him properly.