There are law fanatics in every uni. The fact is that USYD and UNSW house a majority of these nerds.
What may make these two univerisites more appealing, (prestige aside), is the constant nerdy enviroment they are surrounded by. This sort of enviroment facilitates, to a large degree, ones self improvement as well. When you see the person next to you study 24/7, you may feel guilty and start to do the same.
On the other hand, you may be the sort of person that will easily give up and just be happy with your P's and C's because you know that there is no way in the world you will be able to beat the person next to you.
At the end of the day, results will be dependent on the sort of person you are and how you percieve certain things.
Employment will be largely dependent on your results.