Yes a lot of the time the disc label or even the disc is the same across different EU releases, and sometimes also AU release. On some games you will even see OFLC, PEGI, USK and/or BFFC on the disc at once. I'm certain they do this to save cost of pressing new disc, especially since they do not change the code or localize the game itself for every region. Just make different cover and manual for the different languages and countries most of the time. Also, a lot of AU games recently are just UK or EU English versions with AU labels on them.