I'm not at all qualified to talk about The Book of Wisdom or the Book of Sirach because I haven't read or looked into either of them. But I do feel qualified comment on the Gospel of Judas. It became pretty popular while the Da Vinci Code, and all the Bible conspiracy hubbub was popular so I looked into it and read it after reading The Da Vinci Code.
Firstly, almost no one, (neither religious scholars nor secular) believes this book came from anywhere near the time of Christ. Admittedly, many secular and a few religious scholars do argue that some of the books of the New Testament date to a matter of decades after the Resurrection, but no one anywhere argues that the Gospel of Judas is older than 180 AD.
Secondly, there are an uncountable amount of things contained within this book that flat out contradict the consistent story that the books of the Bible tell. Its not as if there's a debate going on between the books of the Bible about the Gospel, and that the Gospel of Judas is just another side of the story. Its version of events are completely contradictory to the story told by the various books of the Bible.
Thirdly, I find it outright laughable that the same people who accuse the books of the Bible of bias and collusion for this and that reason blindly accept this book as an honest account. Only the blindest of readers cannot immediately see that this is clearly a propaganda tool for the Gnostic movement of the early 200s. Its not an honest and heartfelt revelation. It is quite clearly a tool written by a person or group of persons in order to further their movement. "Oh that Jesus guy! Yeah, yeah! He really believed all the things we believe! No! Honestly! See, he said this here and here! Oh? You've never heard of this gospel? Well... Yeah... Judas wrote it!"
Fourthly, the Gospel of Judas is little different than the gospels of Mary, Thomas and company. No one believes they were inspired. No one believes they were from the period they claim to be from. Everyone acknowledges they were pieces written by a certain Gnostic sect, hundreds of years after the fact in order to further their sect. If the Gospel of Judas was something unique, it might warrant some serious thought, but its just another in a series of these kinds of gospels that all came out of the same place for the same purpose.
If anyone cares to look into it more,
equip.org has a good piece on it.