silly. no luck man, skills. Djok played out of his mind at the AO 08. same with Rog and Nadal when they played their first majors. As much as I love Murray he is, unfortunately. not good enough... nothing to do with luck. I can only hope that he will get there, but it ain't gonna be easy if he has to go trough Nole, Rog or Rafa. He lost too many important matches to them. There is a good reason why the are multiple GS winners.
I still don't see any reason for people saying he isn't good enough?
18 Months ago Djokovic wasn't good enough to win another slam and he looked to be a one-slam wonder. If Djokovic can propel his game to this level, there's no reason Murray can't, in terms of their game they are about equal. Djokovic does some things better than Murray, Murray does some things better than Djkovic (Serve, Volleying).
I'm not saying Djokovic was lucky, but had Murray gotten, Puerta, Tsonga etc. in one of his finals he'd have atleast one by now and probably more.