What a critical article. Basically sweepingly states that the only reason Murray achieved his success last year was because Nadal wasn't around. Gives no credit to Murray whatsoever.
If we actually recount the facts, Nadal was the first of the other big three that Murray beat in a Slam (twice), and Murray wiped the floor with him in their last encounter (Tokyo 2011). Murray's game has only improved since then, quite dramatically, and comments like, "Could Murray have claimed that much hardware with a healthy Nadal playing in those tournaments? It's impossible to say, but history suggests no.", and "Murray has reached the finals of each Slam since Nadal went out. Coincidence? Highly doubtful" are incredibly ignorant and totally disrespectful. Before the USO Murray had never beaten either Djokovic or Federer in a Slam - which he has now done in successive slams. Absolutely nothing to say he wouldn't have ended his recent run against Rafa as well.
Of course let's ignore than Nadal also 'owns' Federer too, and 'owned' Djokovic until his noticeable improvements in 2011 and just attribute Murray's improvements completely to Nadal being injured.