Let's not go that far LOL. Djokovic's defensive game would have been enough against Stefanos.
Not in my opinion.
2015 stats after 1st two sets
Wawrinka - 28 winners/24 unforced errors
Djokovic - 13 winners/21 unforced errors (only 3 forehand winners)
2021 after 1st two sets
Tsitsipas - 27 winners/12 unforced errors
Djokovic - 21 winners/22 unforced errors
Tsitsipas was simply on fire in those 1st two sets. Djokovic hitting more winners and about the same amount of errors against a much younger and taller player in 2021, and who was more athletic. Falls in line with my view that he was quite passive in 2015, but also erratic for his standards. Guiding the ball isn't going to win you Slams. Just because 2015 was peak Djokovic doesn't mean he played a great final. I think he played a better SF or SF/F combo in 2011, 2012, 2013, 2016 and 2021 than 2015. That's why I would bank on Tsitsipas beating him plus I just think he was too tight to play a better match.