I am not too familiar with how it works in NSW however my understanding is as follows....stand to be corrected.
The CareFlight HIRT fellas monitor a computer...job comes up that fits the bill, self task and they are off.
CHC out at Bankstown....job comes in, goes to a comms operator...goes to MRU who probably F$%K around trying to decide the best course of action...decide a helo is required and then get the ball rolling.
Both organisations have their niches and advantages/ disadvantages. I have nothing to do with either but it does appear to be a case of comparing apples and oranges.
Turkey