Not sure what the word means exactly because I haven't studied it. But my response was in terms of how it was previously used by the poster. And it was merely an attempt to qualify a previous answer.I don't believe he changed his mind, metanoia mean 'beyond thinking' and Judas's mind never went beyond earthly thoughts.
The point I was making is that true repentance is a result of a Godly sorrow. It seems you agree.