Only the ROI of the probability of 6 consecutive tournaments was miscalculated, not the engine correlation percentages.
Fischer at his best during 20 consecutive winning games at his peak performance had an average engine correlation of 72%, while Niemann's average was 73% across 5 tournaments. I just saw this: Magnus Carlson's average engine correlation across 5 tournaments in 2021 (roughly the same period as Niemann's 5) was 66.48%[1].
Niemann conspicuously appears to be a superior chess player at 19yo than both Bobby Fischer at 27yo during the peak performance of his career and a much better chess player than Magnus Carson at 30yo while he was and is reigning World Champion.
