Agreed, it's exactly where my problem with it lies. Without digressing too much, lemme just say that it's subjectivity of the highest order when you start elevating people based on the field they come from, and measure them against only their field... without paying any regard to the quality of that field itself. Professional hockey players from 100 years ago could not possibly hold a candle to today's athletes, and it shouldn't take a rocket scientist to figure out why. "Dominance" is a completely different animal than "Greatness"... it decontextualizes the overall picture by virtue of its very parameters, and you cannot do that in a discussion about the "All-time". That's just asinine.
If HoH were to finally start calling their lists by their proper names, they'd do themselves a service, and other people wouldn't view them as nostalgic delusions.