Karma Tennis
Legend
Obviously a joke post. Pete Sampras was so much more mentally strong than Fed nobody could even measure it. Pete was a mental rock, Fed....??? Not even close.
Joke? Seriously? The only things that matter ...
AO
Federer 6 Titles from 7 Finals, 8SFs
Sampras 2 Titles from 3 Finals, 2AFs
RG
Federer 1 Title from 5 Finals, 3SFs (in an era shared with Rafa Nadal, greatest Clay Courter of All Time)
Sampras 1SF
Wimbledon
Federer 8 Titles from 12 Finals, 1SF
Sampras 7 Titles from 7 Finals, 1 SF
USO
Federer 5 Titles from 7 Finals, 1SF
Sampras 5 Titles from 8 Finals, 1SF
Federer is the more complete player. He has played over a greater number of years and continues to play at a very high level into his late 30s. Sampras retired in his early thirties because he was mentally fatigued. (And this is before you consider the additional pressures placed on modern players that Sampras never had to endure. All of that adds up in the Mental Prowess stakes.)
No other player in the history of the game has "carried" the sport the way Federer has ... except for perhaps Bjorn Borg.
Federer has also had to deal with three other great players of his career (Nadal, Djokovic and Murray). Two of them other legit potential candidates for modern GOAT Status, Nadal and Djokovic. Sampras really only had to deal with Agassi.
Don't get me wrong. I love Pete. He was great for the game. But he was in no way a complete Tennis player. He, by his own admission says that. He focused his game on winning Wimbledon titles and his home Major. Federer focused on winning everything. Pete was great when he was dominating matches.
At their PEAK, the more complete player will always dominate. At their Peak, Federer would easily account for Sampras on his favoured surface. Easily match him on HC. And completely dominate him on Red Clay. No contest.