Could you folks correctly identify a New York accent from a Boston accent from a Jersey accent from a Philly accent? Heck, they're all within 500km of each other.
Boston from New York - yes.
Jersey from Philly - probably not unless one was wearing an Eagles hat.
It can be tough but Brit and Aussie are pretty far apart sound-wise. How do you guys do on South African v Aus v Brit v New Zealand?
I can tell the difference between Aussies and Kiwis usually but I have occasionally offended Canadians