"We have just received the results of carbon dating: the text is older than we thought and dates back to a period between the beginning of the third and fourth centuries," foundation director Mario Jean Roberty said."
300-400 AD
"No one can clearly state that Judas wrote it himself,"
Unless the dude did not kill himself AND lived to be 300-400 years old, I can bet that he did not write it.
LOL good point !
You probably already knew this, but prior to the invention of the printing press, all texts were hand written. Texts which were important were copied. I seriously doubt the authenticity of the original text, but no one is claiming that it is the first copy of the document ever written.