[rybosworld]

Not anymore than elevated testosterone levels are "proof" of performance enhancing drugs. Engine correlation is a marker and when combined with other markers, can be meaningful.

What it mostly shows is that Hans move strength is unnatural.

Further evidence to support this is that he often plays bad moves. That is, moves that are considered blunders, with a high frequency. This is either an attempt to cover up the engine moves or representative of his actual capability. For instance, the report mentions that in a post-game analysis he suggested a move that would be an obvious blunder. When the interviewer pointed this out, Hans wasn't fully convinced until he was shown the engine analysis. So he also is showing a habit of deferring to what the engine suggests.