What about them?
I think that the careful choice of books in the bible just says that they were putting together the new testament with care, not putting in anything anybody wrote about Jesus. The reason that they weren't allowed in the new testament was because of their obvious inconsistency with all that was known about Jesus.

That being said, there is reason to believe that the people just wrote down what they saw and did not pretty it up. There is a lot of things writtten that could be considered embarassing towards Jesus or his disciples. Yet, it was written, as they saw it happen even though that meant critiscism, ostracism and martydom.