A superb record with one gaping flaw: 0-5 record in Wimbledon finals.
I agree that this is a negative in Rosewall's record, at least to some degree. You've argued that Rosewall won the Australian, French and US titles in those periods when he failed at Wimbledon, which is a good point and one that I made some months ago. The way I put it: if he was good enough to win the grasscourt majors in Australia and New York, he should have been good enough to win at Wimbledon. The fact that he didn't is a genuine failure: he failed to do what he should have been able to do.
However I can't agree at all that those losses disqualify him from being the GOAT. Yeah I know the whole GOAT debate is largely subjective, and when it comes right down to it, anyone can say, "I place a high priority on X factor, and if I don't see a player accomplishing X, then he can't be GOAT. Not for me." In that sense I'm not going to try to change your mind.
But Rosewall just spent too much time barred from Wimbledon to be able to pin him with a GENERAL failure to win Wimbledon in his career. He lost at Wimbledon at certain times, and losses count; that's fine. But he lost 11 seasons to the pro game: his 11 best years. Those were by far his best chances to win Wimbledon, and he almost certainly would have taken 1 or 2 titles if not more.
I'm not trying to hand him imaginary wins, by the way. I'm just saying, he didn't fail to win at Wimbledon in his best years. He failed in years when he was a level, or more, below his alltime best; so his failure at Wimbledon is not comprehensive, not central to his career.
Think of it, at least 50% of his career was spent away from Wimbledon. He had 11 seasons as a barred pro. And he had 11 seasons in which he was making the finals of the classic majors (1953-56 and 1968-74). How can someone be disqualified from being GOAT for a failure that only covers half his career, and not even his best half?
This whole Rosewall situation reminds me of Navratilova and the USO. Martina had a poor, sometimes dismal record at the USO before she won it in '83, when she really was at her best. She was so good then that there was no stopping her anywhere. Something like that is what we're saying about Rosewall: he was not allowed to play his best tennis at Wimbledon, as Martina was able to do at the USO.
And yet Martina's USO losses before '83 all still count, when evaluating her entire career. When you weigh the whole career, everything counts to some degree: just as Rosewall's early and late losses at Wimbledon count. On that point I think you're right.
Federer has a superb record. There are just a few flaws: no Grand Slam , no French Open against Nadal, "only" 17 majors in comparison to Rosewall's 23...
I think Federer's being held to too high a standard here. The fact that he's never beaten Nadal at RG just means he's not the claycourt GOAT. Only another GOAT-level claycourter can be
expected to beat a peak and healthy Nadal at RG.
That's not to say that no one can do it; someone might. And if they do, kudos to them; they found a way to do it. But to
expect it, or require it, is something else. You really could only expect it of someone who was on Rafa's level on clay: or someone who, like Nadal, is claimed to be the claycourt GOAT. But none of that is claimed for Federer.
Laver is not the claycourt GOAT either, but he's on everyone's short list of GOAT candidates.