Casperthy_Frendligost: Edmund WAS victimized by Jadis and was involved in the Death of Aslan (tho the Deeper Magic resurrected Him). Edmund, however, unlike Judas, was forgiven, redeemed himself and became one of the 4 High Rulers of Narnia.
Anonymous5: Also, Edmund didn't particularly betray Aslan, as he hadn't met him, although he did betray his siblings (even though he didn't know they'd be put to death). Judas on the other hand betrayed Jesus (Aslan) knowing what would happen to them, although was later stricken with grief.
Also, Rule34 win for actual theological discussions that aren't just bashing religion.