@bigdoggproblem said
Well, they were both bad deeds.
But only one fit the "abandonment" mold.
Peter denied Christ three times after bragging; he would never leave Christ; he cried bitterly afterward. Peter didn’t stay there in denial or regret; instead, he repented afterward, admitting his guilt and returning to Christ. His repentance showed a Godly sorrow for what he did. Peter’s repentance contrasted with Judas’ earthly regret over his sin, killed himself over his betrayal of Jesus. An angel made a distinction between Peter and the disciples at the tomb, which later disappears. Denying Christ before men is a big deal!
Mark 16:6-8 English Standard Version (ESV)
When the Sabbath was past, Mary Magdalene, Mary the mother of James, and Salome bought spices, so that they might go and anoint him. And very early on the first day of the week, when the sun had risen, they went to the tomb. And they were saying to one another, “Who will roll away the stone for us from the entrance of the tomb?” And looking up, they saw that the stone had been rolled back—it was very large. And entering the tomb, they saw a young man sitting on the right side, dressed in a white robe, and they were alarmed. And he said to them, “Do not be alarmed. You seek Jesus of Nazareth, who was crucified. He has risen; he is not here. See the place where they laid him. But go, tell his disciples and Peter that he is going before you to Galilee. There you will see him, just as he told you.” And they went out and fled from the tomb, for trembling and astonishment had seized them, and they said nothing to anyone, for they were afraid.