Originally Posted by BobbyOne
krosero, I partly can agree. But I still think achievements are easier to compare than playing strength.
They might be, but only if achievements are separated entirely from playing strength. In practice we rarely do that; and we wouldn't want to. Nobody considers Emerson's 12 amateur Slams to be of the value of Laver's 11.
Ultimately the two -- achievements and playing level -- are bound up together. Playing to a high level is ultimately an achievement, and one which all of us want to see in any of our choices for GOAT (or other similar honorifics, like best player of the 1980s, or claycourt GOAT, etc.), or when asking which of two players is the greater one.