I agree with much of this but which still doesn't square up with Fed losing to Berdych or Tsonga. See, 2010-11 was not a lull in the way 2015-16 was for Nadal or 2017 for Novak. The latter two's confidence was shot and they were playing awful those years. Fed wasn't. Fed GOAT-ed at AO 2010. Again at the RG 2011 semi. Won WTF both years. That was the frustrating thing about Fed in those years. He was still very much capable of his best tennis and even produced it often on the biggest stage, but still had those annoying losses. It seems harsh, again, to 'blame' him for that but that's what it comes down to vis a vis Nadal/Djokovic. The losses Fed suffered to Djokovic/Nadal in those years, I don't mind (though I do mind the original iteration of 40-15). But the losses against far lesser players when he was otherwise playing well have hurt his tally. I do agree by the way that Nadalovic haven't had younger ATGs challenge them the way Fed has had with, well, Nadal and Djokovic. But they have also not gone on a walkabout when playing well the way he often did in 2010-11. Even when they do, they are focused enough to find a way back into the match and win.