Originally Posted by pc1
Subjectively I don't think there's much between Sampras and Federer but you're right, objectively Federer is ahead in tournaments won, lifetime winning percentage, percentage of tournaments won, majors won and percentage of majors won. If you go by objective criteria Federer is clearly ahead of Sampras.
Subjectively, some people think there is a lot between Federer and Sampras, but in my opinion, this second opinion is as useless as yours.
I don't know how anyone can construct anything (arguments included) based off of unfalsifiable opinions.