Hang on, lets not get carried away here.
Wasn't it Djokovic, in the heat of Cincinnati that RETIRED from the Masters final (vs Murray) due to shoulder problems? Same conditions as Melbourne.
I am not a Nadal fan but this shoulder isssue has effected Djokovic FAR more than Nadal results wise:
Nadal made his shoulder worse during Davis Cup, but won his matches nevertheless and rested during off-season.
Djokovic made his shoulder problem an issue during Cincinatti that forced him to retire from the final + skip Asian swing
Djokovic's results have actually been effected by shoulder problems far more in conditions remarkably similar to Melbourne. And the only person to upset Djokovic in these pin point conditions is the Scot, Andrew Murray.
This just fuels the case further, Murray-Lendlised under less pressure in a SF of a slam is the only person out of Ralph and Rogi to pull off the upset.
You heard it here, folks.