Disappointing result but Murray's achievements, over the past 12 months in particular, have been outstanding. They mentioned in commentary on the BBC that, regardless of ranking, it was the Numbers 1 and 2 playing and thinking back Murray has achieved the following in the last year:
French Open - SF loss to Nadal who went on to win a record 7th title
Wimbledon - RU to Federer who got a record equalling 7th title
US Open - Winner
Australian Open - RU to Djokovic who set an Open era record with three consecutive titles
Throw in Olympic Gold (and Silver if you want) and Murray actually has a better record than Djokovic over the same period (although I certainly wouldn't argue that Djokovic shouldn't be ranked No 1).
As above, yesterday was disappointing and for me where the match swung was when Murray wasn't able to convert his complete dominance at the end of the first set/start of the second (was it 16 out of 19 points at one stage?) into a break of serve - in these big matches, they all go through 15 minute or so dips and it's up to the other player to make it count. Djokovic was able to limit the damage and when he got his chance really take advantage in the 3rd set. While Murray certainly did not capitulate, Murray's little rant at the umpire at the end of the 3rd was revealing of the pressure he was under and the fourth set had an air of inevitability about it.
Although I enjoy watching Murray play, I'm a bit too ambivalent to be a fan but his achievements should not be underestimated. 1 win out of 6 Major finals does look a bit worrying though, regardless of who he is playing.