I never wished him that.
I'm just saying that he is having problems with his knees and it's not a coincidence since in 2009 after the final in the AO which was a 5 setter, he ended up having knee issues that hampered his year. He can't play 5 setters on HC without having problems in the future but unlike 2009, this year he ended up empty handed after the long AO final. No trophy there.
As for Federer he will have better chances to win in USO or Wimbledon.
It's very hard to win 2 Career Slams.
But Nole could win his NCYGS and Career Slam, specially if Nadal overplays during the clay season and has knee troubles in RG.
his knees are not having that many problems he hasn't even brought it up since before Monte Carlo. Nadal had knee problems that season but you cannot diagnose it simply because he made it far at Australia. you can be certain he will opt out of tournaments to preserve his knees if necessary in todays game.
I think you are getting too excited. Nadal has only once in his career had such shattering knee problems as 2009, and that was IN 2009. Federer is very up and down, and Djokovic has never proven himself on clay and only limitedly on grass.
maybe get a glass of water and face reality before you condemn Nadal to getting an injury