Have to play devil's advocate for a second, sorry. It's important to remember that the idea of being Egyptian overruled racial concerns--we have the Nubian pharaohs of the 25th Dynasty, for example Taharqa, being portrayed as Egyptians in contrast to other darker, foreign figures. Ditto Roman emperors, who were probably lighter-skinned than the standard Egyptian populace (if only because they didn't spend as much time in the fields), being depicted as Egyptian pharaohs. If Nefertiti HAD been of Nubian origin, the bust would still have shown her with more of the classical Egyptian features, since nationality trumped race in their minds. (Within the deviations of the Amarna art style, which was fucking weird for the period.) They were, in fact, filthy reactionary anti-globalist nationalist scum, with the desert as their border wall.
Good point, but DNA kind of trumps any other arguments we have one way or the other. We now actually know for sure.