The similarities are...well, see for yourself:
Both, propped up by the GOP establishment. Both, wealthy scions of wealthy daddies. Both, troubled by incoherence. Both, robotic. Both, hawkish. Both, white- collar-and- tie stiffs (except when they want to be regular guys in jeans, either down on the ranch or before a crowd of regular people).
No? I demur, preferring the principle that if you walk like the other duck, talk like the other duck...Well, you know how that goes.