This is intuitive and I guess I'm not surprised this is what was meant. They analyze the same amount of moves they are simply better at it (picking candidates, calculating, etc.)
I guess maybe im being a bit nitpicky but I feel like this is still a misleading way to say that.
> the average chess grandmaster during a classical game will analyze roughly the same number of moves as an amateur player, but they analyze only the most critical moves and do a better job with that analysis.
You could just omit "only the most critical moves" instead of listing it as an additional thing.
> the average chess grandmaster during a classical game will analyze roughly the same number of moves as an amateur player, but they do a better job with that analysis.
"only the most critical moves" sounds like less, especially when listed in addition to analyzing better.
I digress.