Ah, have to admit, this is a very good counter argument, calling chessbase's methods in to question. And it's surprising that chessbase does not always do the same analysis for each game, that its nodes aren't setup with the same set of chess engines (although, again, maybe most top chess engines suggest similar moves??). Hmm...

... also, not sure I agree with his opinion that for each move that is analyzed, LetsCheck will return 100% if any engine returns 100% (and there could be multiple computers that were used, each with different engines). The point of the analysis is to determine if a player is playing like a computer, and the user may himself have multiple chess engines open in order to confuse the cheat detection. But again, am not an expert at chess engines or statistics, so am not sure what effects checking multiple engines has...

... also, he says that "Ken Regan's scientifically valid method has exonerated Hans by saying his results do not show any statistically valid evidence of cheating." This is very confusing, because Chess.com post has basically said the opposite (maybe Ken Regan's analysis is referring to a different subset of games?). Guess nothing is definitive. But at this point, I still lean towards Hans cheating (on top of this analysis, there is also a lot of circumstantial things he did that to me indicate he might have cheated, which is too long a topic to go into).