As an Australian I have to tell you that in my opinion Nicks scores are about the least reliable and accurate around. The general opinion amongst most educated wine buyers that I know is that the score given by Nick is directly related to his profit potential for the wine involved.
In short, his scores are a joke.
Just a few examples
2000 Temple Bruer Shiraz Malbec 97
2000 Saltram Mamre Brook Shiraz 95
1996 Orlando Lawson`s Padthaway Shiraz 93
2000 Bowen Estate Coonawarra Shiraz 98
1996 Penfolds Grange Hermitage 96
1998 Edwards & Chaffey Section 353 Shiraz 96
1998 Penfolds Bin 707 Cabernet Sauvignon 94
The mind boggles at these scores.
The Lawson is so far superior to the Temple Bruer and Mamre Brook its laughable.
96 Grange which is one of the best wines I have ever drunk is two points lower than the very ordinary 2000 Bowens. Who are they trying to kid?
And finally the 98 Edwards and Chaffey (made by the same company as Penfolds) being better than the 98 Bin 707, sheer bloody madness.
Credibility? WHAT credibility! There is none with these sort of scores.