Apparently, you interpreted the meaning of the words differently, ml. Can you imagine that?
Dr. Ehrman is a "Christian scholar" as in "scholar of Christianity", just as a "New Testament scholar" is a "scholar of the New Testament".
Bart D. Ehrman is a New Testament Scholar and an expert on Early Christianity. He received his Ph.D & M.Div. from Princeton Theological Seminary where he studied under Bruce Metzger. He currently serves as the chairperson of the Department of Religious Studies at the University of North Carolina at Chapel Hill. He was the President of the Southeast Region of the Society of Biblical Literature, and worked closely as an editor on a number of the Society's publications. Currently, he co-edits the series New Testament Tools and Studies.

"Growth is all that matters!" CRAMER