The thing is American toilets are bizarre to start with. You guys have an insanely high water level, and accomplish flushing by basically just draining it.
Australian toilets are very different - the water level is low, and the flush is accomplished by violently dumping water from the tank into the bowl from a rim - which, having experienced both - effectively washes it clean with the percussive action.
Australian toilet flush example (work safe, nothing in it): https://www.youtube.com/watch?v=4RWoJ2VNd3o