Don't know that many people are upset by people brighter than themselves.
Though I must admit, in my own case, that I am certainly envious. But then there have always been people richer, more talented and more attractive to the opposite sex than than me. Life's an itch if you care to see it that way. I prefer to note (positively) that even with my modest talents I've been lucky enough to have enjoyed a satisfying career, modest self-sufficiency and the love of good women. I say "luck", not "merit", by the way.
But comparisons are odiferous, aren't they? Or at least when they're not being invidious, which is the drift of the OP. The "correct" way to view these natural and inevitable inequalities is that there are far more people in the world who are less fortunate than me than people who are brighter, richer etc than me. The difference between Mark Zuckerberg and me is minimal compared with the difference between either one of us and a million people in South Sudan.