He won 3000 points in the last 3 weeks, he'd only won 2620 by the French Open in June last year. In that time, Rafa defends 4590 and Nole defends 6750 (!).
Points since Wimbledon:
Nole 4205 (Basel is non-countable)
Looking at that, I'd say #2 is a distinct possibility.
I don't think he'll get #1 unless he wins the Australian Open, or gets to the final while Rafa and Nole fall by the wayside. But the fact that people are talking about it again is a slightly good sign.
That's a big advantage for fed. He does not have to play so physical to win. Fed is the only one of the top 4 who does not seem physically or mentally fucked.
That's like saying 'he has a big advantage because he's better.' Can't be used to denigrate his achievements.