Is the Qur’an More Reliable than the New Testament?

I often get asked questions about the Qur’an, and I almost always do not answer them, most because I can’t answer them.   I’m not an expert on the Qur’an, and tend to talk only about things I have done serious and sustained research on.  Otherwise I’m just spreading stuff I’ve heard, and I’m no more authoritative on that than anyone else.  So what’s the point of my talking about it?

But one question that I get frequently, especially from Muslim readers, is about the manuscript tradition of th...