I don't think that Murray lost because of his draw. The match today was very similar to the US Open final -- except that Murray won the second set there, and couldn't manage it here.
I think this is just how it goes with Murray/Djokovic five setters. Murray can match or exceed Djokovic for two sets, but then he gets spent and Djokovic goes on a tear. It was like that at the AO semifinal last year, too, except that Murray's strong sets were 2 and 3.
If Murray had capitalized in the second set today, I really think he would have taken it in 5.