Your commentary is a full of nonsense and demagogy.
You argued that Davydenko didn't defeat Nadal when Nadal was a complete player, and that is nonsense because Davydenko achieved most of the wins at a time when Nadal was already the winner of AO and Wimbledon. Davydenko reached his last win over Nadal after Nadal's most successful season in career, 2010. If you still claim that Nadal was not a complete player in this time, then you are a jester for me.
Another dubious claim is that this year was best for Nadal in the career at HC. Did you forget 2013 season when Nadal won the US Open, Indian Wells, Rogers Cup, Cincinnati and was in the WTF final? That was Nadal's HC peak. As for HC this year, it was a great year for Nadal, but the same is true for 2009, 2010 and 2017.
What you didn't add to this year's Nadal balance for HC is that Nadal stepped back several times without a fight, which improves the balance. Not surprisingly, Nadal's balance at HC in 2019 season is better than on the clay, when he completed all the matches at clay, which he was supposed to play.