Phoenix1983
G.O.A.T.
The point is that Kuerten overcame his rivals and won 3 French Open titles in all, while Federer was bested by his biggest rival 5 times at the event and won 1 French Open. Let's deal with what actually happened, objective reality.
- Nadal has played 60 matches at the French Open, has won 59 of those matches, with 57 of them coming in fewer than 5 sets.
- Thus in 95% of the matches that Nadal has ever played at the French Open, he has won without even being pushed to 5 sets.
Talking about who's a tougher rival is a subjective thing, an opinion, and therefore has a personal bias when people take the argument in that direction.
I don't care who you are, but if you say "person 1 is a stronger rival than person 2", you are putting a personal opinion forward, which has bias.
Personal opinions, when based on objective data like the statistics I posted about Nadal above, are not biased but based on common sense of interpreting numbers. The fact is that Nadal is the most dominant FO champion there has ever been, against Federer and all other opponents, and it is not biased to state that he is a stronger rival than Kuerten would have been.
It's the same as me saying that there's a higher probability that Spain will produce a male grand slam singles champion before Zambia does. I suppose you would not say that I am biased towards the Spanish for stating that?