I don't think he was disparaging his looks, but rather his social skills. It's undeniable that Zuckerberg is not really an extroverted social butterfly with good public speaking skills, which is kind of a requirement if you want to get into politics.

Looks decide the first impression and the attitude people associate with you.

In the public, no one associates leadership and composure with Zuckerberg.

In politics looks matter like it or not.

Have you seen the current U.S. President?

Didn't you see the slip from "public image" to "look".

During Bush's funeral I saw 4 respected, graceful presidents, and an orangutan. I won't comment on Trumps image or qualities as a president, however he clearly doesn't have hollywood looks, or even good looks.

No, the slip in this thread from discussing public image and perception to physical appearance.

Compared to his rival he was still the better looking one.