He's also won more matches there than Borg. Who cares? He's six years older and only has ten more wins at RG than Djokovic. If you removed Federer's first six RG's, where he was never on the shortlist of favourites yet amassed nine wins, he'd only be one ahead. Yet it would change nothing. Little more than a factoid in the context this discussion.
It's clearly debatable, which is why there have been pages worth of debate about the subject. The consensus is that Djokovic is more accomplished while Federer got denied more at RG by a prime-peak Nadal. However, even among those two contentions, there is debate. One could say that Federer's extra RG final makes up for the deficit (but then Djokovic played Nadal in the semi's on three separate occasions in years where he was the second best CC'er! Only once was that the case with Federer), and one could also claim that prime-peak Nadal denied Djokovic plenty on clay (see: 2009, 2012).
I lean Djokovic career-wise on clay, with peak play being about equal. Regardless of where one stands, to say Djokovic isn't in the discussion is ludicrous.