it reads to me like “2% of people are superheroes” — they have performance that is way better than the rest of the population on these tasks.
As you concluded in other comments, this is wrong. But there doesn’t need to be a sharp cutoff for there to be “way better” performance. If the top 1% consistently have brier scores on a class of questions of 0.01, the next 1% have brier scores of 0.02, and so on, you’d see “way better performance” without a sharp cutoff—and we’d see that the median brier score of 0.5, exactly as good as flipping a coin, is WAY worse than the people at the top. (Let’s assume everyone else is at least as good as flipping a coin, so the bottom half are all equally useless.)
As you concluded in other comments, this is wrong. But there doesn’t need to be a sharp cutoff for there to be “way better” performance. If the top 1% consistently have brier scores on a class of questions of 0.01, the next 1% have brier scores of 0.02, and so on, you’d see “way better performance” without a sharp cutoff—and we’d see that the median brier score of 0.5, exactly as good as flipping a coin, is WAY worse than the people at the top. (Let’s assume everyone else is at least as good as flipping a coin, so the bottom half are all equally useless.)