My problem with these types of studies is I feel they are a bit rigged from outset. If one found a neanderal specimen that gave a sequence like that of the Cro-magnon, it would likely be dismissed as a lab contamination.
That statement doesn't exactly inspire confidence in the objectivity of the process.
Edit to add that you answered the "why" question earlier. It seems to me then that drawing conclusions from DNA studies of Neanderthals is a severely flawed process.
Edited by randman, : No reason given.