McMullin has a short midface (facial features more clustered towards the center) and is unfortunate looking having a bald head. Most men who have short midfaces have the worst time pulling off the bald look, since their forehead appears disproportionately long/large and seems to go on forever!
So yeah, looking as odd-headed as he does, he really has no biz knocking Trump's looks...the guy is 70 after all! McMullin is much younger so he has no excuse looking as crappy as he does lol