As a graduate of Curtin, where you have studied online via Curtin OUA, you receive the same accredited qualification as an on-campus Curtin student. You will therefore have the same career prospects as any graduate of Curtin University from that course. Of course your efforts will be reflected in your results and this may influence your prospects. Always aim to do your very best!
Please refer to the section entitled "Career opportunities " for the course you are interested in. Please refer to the Curtin OUA courses at the OUA website.