There's a good BBC article about it. Apparently the women's break dancing talent pool in Australia is just very very small. Her routine is apparently usually more traditional, but when she went to the Olympics she decided she'd have no chance against the young and athletic 'powerhouses', so instead tried to compensate using creativity and Australian identity as her supposed strong points. Apparently the people she'd beaten to get there were shocked and confused, and questioned her decision making. She should've just tried her best at traditional breakdancing, perhaps. Then again, would she have become a global icon? It'll go down in history, that's for sure.