I agree. Consistently playing high level, commited to play throughout the year is totally difference than just playing high level for a short period. The challenge isn't just about playing the big events, but continue to compete for 1 year. On the men side, there's 4 different slam winner, but the reason why Nole ended the year #1 because he more consistent than Fed/Murray/Nadal. Serena could have been #1 if she's consistent. This is something Graf/Martina was able to do throughout their career and it helps boost their placement in his history as the goat.
"Ohne Musik wäre Leben ein Fehler."