Why would it be the highest level ever? Because Djokovic won a lot that year? That is like a Federer fan saying "2004-2007 is the highest level ever" just because Federer won a lot those years. Or a Nadal fan saying "2008, 2010 and 2013 is the highest level ever" just because Nadal won a lot those years.2011 is the highest level ever!
Chill I was just joking around. But I would choose 2011 in this case.Why would it be the highest level ever? Because Djokovic won a lot that year? That is like a Federer fan saying "2004-2007 is the highest level ever" just because Federer won a lot those years. Or a Nadal fan saying "2008, 2010 and 2013 is the highest level ever" just because Nadal won a lot those years.
There is no objective way to measure the "highest level ever".
This.I would say based on level of play, 2015 > 2011 > 2014 > 2018 > 2019 so it's not hard to see which version would win.
2019 Djokovic is peak Djokovic?I would go for W2019 due to opposition he played. In 2019 Djokovic played on grass the best version of Federer ever who just beat Nadal.