This is the perfect storm that Fed was waiting for. When everyone was saying "I think Fed can win 1 or 2 more if everything plays out right."
Well everything is playing out right in this one. Joker out, Murray returning from injury, Nadal with nasty hand blisters and looking beatable, new racquet, modified playing style (coming in more).
Stan taking Berdych out was another one. Stan is hot right now, but Fed owns Stan. They train together during the offseason being from the same country.