Just to clarify..
U get professional recogition for CA/CPA provided u do an Accounting major and complete a minor set of subjects in Business Law and (for CPA, u have to do an Information Systems subject)
the B.Economics @ UNSW is recognised, even though it may not say it on the CPA site - u just have to do an Accounting major and certain other Business Law subjects (which means, u have to do a couple of extra subjects than the minimum 144CP to graduate)
check the CPA/CA websites to find the set list of subjects that u need to do over the course of your degree