Oh they are definitely different questions. It might be worth asking both, it depends on the context the question is being asked in. For me they all get the same answer which makes it harder for me to figure out what questions to be asking.

The one thing that bugged me in this one is actually something that I need to stop being bugged by, which is having to tick 'Oceania' rather than 'Australia'.

It bugged me too and always does, but I decided that if the Germans and Canadians etc had to deal with being lumped together with people from completely different parts of their respective regions then I should have to deal with the pain as well :)