This is complete garbage. Real statistical analysis has been done, and has been inconclusive so far. Cherry picking games is ridiculous - at the 2800 level, a GM will only deviate from the engine's top moves 0-3 times. It would be expected that an exceptional performance would remain within top engine moves if someone was able to play at that level.
Hans isn't at the 2800 level, but Magnus is almost 2900, and probably has good reason to be suspicious of someone playing way above their rating in tough matches.
