The Gospel might be a real one, but there is no proof for Judas is the author of it. The actual script itself was written in Greek, in 2nd century. There were always conspiracy theories among the Church from the first century itself. I think this also a creativity of somebody who's had some sympathy on Judas and its a part of such conspiracy only.
But this Gospel is another proof for Jesus was alive. There are so much conspiracy theories who are denying the existance of Jesus. Also its going against theories of so called Davinci code, where people belive Jesus was not crucified, but married Mary, and lead a family life.
