Similarities? They both have 18 holes. The major difference is that one of them is an excellent course, and NSW is not.
Notts is a long course with quite a few subtle features, not something you regularly find on long courses (National Moonah, Metropolitan).
The differing land forms have been utilised to excellent effect, something that couldn't be said about NSW.
The textures and conditioning at Notts are nigh on perfect, as far above NSW in quality as it is possible to imagine.
Scott, if you and James think Notts and NSW are even remotely similar, I would suggest that next time you play Notts, you don't so so in the dark.