I guess if there's a conclusion (unless someone has better ideas), there appears to be a real difference in the two cameras, it isn't a settings difference. I've been through things so many times I think I can say that for sure.
I could try to adjust for it, but it appears to be worse at higher temperatures, so decent incandescent, significant at sunlight, and probably worse under florescent though I haven't tried (it is worse under arc lights but I'm not quite sure why as they average a lower temperature).
So I'll probably leave it alone, as most of what I do is sports and I manually adjust anyway. I usually just blow in a specific temperature that I've figured out for each venue, then adjust as needed for different areas and cycling.
But there's definitely a difference here, subtle at times, more extreme at times.
On a related note -- anyone know what area is analyzed for color temperature? And I'm leaping to the conclusion it's done at focus time, maybe it's calculated from the raw image as it is processed?