Judas iscariot is basically evil peter

So there were many conversations which implies that he has the same ability as Peter as he could use anything as a weapon ( the conversation between him and Mathhew ) and reach the highest mastery level at the first time he used them ( conversation between him and the monk that uses the throwing thingy idk what's it called ).

The reason he betrayed Gabriel seems to be that he's jealous of Peter, as Matthew asked him why he is called " Another Peter " and he gets real mad mentioning his name. Perhaps in the past, despite having the exact ability, Peter's skills and experiences overshadowed his existence which makes him jealous.