Found this info and thought it might help out in the debate. I have noticed that when it is really cold outside, I don't see the ghosting. Tonight it was in the teens with windchills in the -10 range and I had zero ghosting at all. I don't know how the thermodynamics of glass work exactly but it may have something to do with it.
New heads-up display technology uses DuPont Butacite® Wedged PVB