Well, I’m not arguing the semantics of the words “tragedy” and “redemption.” We know what I’m saying. Ben’s turn to the dark was lamentable, and I believe he should have the chance to turn back to the light.
As for Anakin, trying to save Padme makes his turn slightly more noble, but no less greedy and selfish. And his sudden “Palpatine must stand trial” appeal is ridiculous, yeah he knew it’s not the Jedi way, but that hasn’t stopped him before, and it was clear Palpatine was a deadly threat who was literally just trying to kill Mace. Not to mention he had very little reason to buy Palpatine’s story that the Jedi were plotting to take over. Whereas Ben and (a handful of students with him) killed only the remaining students (less than a dozen) after his teacher tried to murder him.