Sampras was mentally tougher by far. Federer is a bit flashier game wise and better marketed.
Sampras is almost at Nadal levels of mental toughness. He was just hard to rattle. Federers mental strength is more equivalent to Agassi. It kind of comes and goes. prime federer was a very good player though.
I guess it depends how you define mental tougness. Federer seems to bounce back from losses the best.
But, I guess on court in tough points Sampras seemed mentally stronger.
But then Sampras got mentally burned out. It took too much out of him. He said that he didn't have a normal night sleep his entire career. He also had to retire because he was drained.
I guess Federer has toughness of a marathon runner, Sampras has more of a toughness of a sprinter. Both are important, I guess. Because that mentallity allowed Federer to maintain all those streaks and records.
But I don't mind that about Federer. He compensates for his mentality on big points with superior skills.
It wouldn't be fair if Federer also had crazy mental toughness. 25 majors?
But, Federer's mentality is by no means weak. He is no midget. He is a mental rock, just not compared to Nadal.
But just because Nadal is tougher, that doesn't make Federer weak. I mean nobody is that tough as Rafa.
But, I sometimes wonder if having higher margins can add to mentality. Because in big points Rafa can rely on higher net clearance. Even if he is mentally weak, he won't miss. So, maybe that is just related to style. Or his superior defense. If you have defense it's a bit easier to be tougher, because you don't need to play low margins with defense too.
The same with Sampras. He had godly Serve to bail him out, so this gives you more confidence. Karlovic is not generally that tough, but he comes up with the goods on big points too.
Just wondering if mentality can also be related to safer style.