I use that site as well to keep my eye on the progress of my favorite players, but one just have to admit having accrued more GOAT pts. as that site suggested you can't simply rank a GOAT contending top-5 player of all-time like Sampras below someone like Connors or Lendl, who barely scratch the bottom of top-10 of open era ones with probably only Agassi and McEnroe positioned slightly lower...it just...doesn't compute, as far as greatness goes he is like two leagues ahead of both of them! LOL
I'm not sure - it really depends, like I say, on what you look at. Doing it at slams, if that's all you're interested in, sure it's Sampras - by a distance.
Does Connors winning 45 more titles than Sampras, or Lendl winning 30 more than him count for nothing in considering greatness? I certainly don't think it does.
Factor in that there's not much of a difference between all three of them in terms of weeks at no. 1 and you can see it's probably just down to choice.