Trump is a chest-thumping buffoon, but he's also a "manly man" -- just look at how he made Marco Rubio apologize for obliquely questioning his penis size, while shamelessly bragging about being well-endowed. He was also willing to tap into America's latent racism, something I doubt Zuck could credibly do. He doesn't have a good story besides "technocrat in chief," and many people will just see the oblivious, arrogant nerd who spent his high school years getting chocolate swirlies.