I do not think a week goes by in which I don't see some conservative Christian blogger talking about how the manuscript evidence for the New Testament is so much better than that for other ancient writings like the Illiad. I have never found this comparison particularly meaningful. It seems to me to be not just a case of comparing apples to oranges, but a case of comparing apples to aircraft carriers.
Suppose for an example that I was quite happy with my barber, but I were to find myself in need of an operation on my brain. In seeking out a brain surgeon, I would not be impressed by someone who recommended a particular surgeon on the grounds that he was just as reliable as my barber. I would simply not measure the reliability of a barber on the same scale as the reliability of a brain surgeon. By the same token I don't see the sense in comparing the reliability of a document that purports to be the inerrant and infallible message of God to humanity to the reliability of a document that purports to be nothing more than an ancient work of fiction.