"Total Votes by Round" measures actual votes cast in all rounds, whereas "Overall Favorite" is a separate vote not based on a listener's round-by-round votes. This is why Debussy has a slight edge over Prokofiev in the Round Votes, and an even bigger lead in "Overall Smackdown Wins" but Prokofiev is neck and neck with Debussy in the "Overall Favorite" choice, showing his music's overall tendency to impress listeners.