this is not hard to get.....Distinction average is quite easy, the only reason people say its hard is cos these people tend to slack off real bad after they studied their arse off for the HSC. At uni, it doesnt get any more harder/easier, you still need to put in the required effort to get your required result. And trust me, D average is NOT hard....
However an HD average is difficult and hard, but achievable...
On another note, i dont reckon it is hard at all to transfer to comm/law, provided you have a 97+ UAI/ATAR and D average, which they advise you to have. In my opinion, this ability to transfer just decreases the prestige of the comm/law degree, you guys might not agree, but let me tell you, i have a lot of friends you didnt make it to comm/law at first, they did well in first year, and then next year was able to transfer to comm/law. So pretty much the 99+ UAI/ATAR needed to get into this course is pretty BS.
The only prestigious degree is Medicine.