Re: 2013 Live Commentary
The biggest strength of Djokovic is movement.
He is everywhere on court, rather like Borg from the late 70s and start of 80s.
The current greatness league of active players in order of achievements to date (a factual comparison rather than fan biased assessment):
Federer 18 GS, 6 Year End Masters, 24 Master Series.
Nadal 14 GS, 28 Master Series, 1 Olympic Gold.
Djokovic 12 GS, 5 Year End Masters, 30 Master Series.