Jetstar and Tiger were the equivalents of kids spending their parents cash. Whether either was doing well no one really knows, but considering Tiger was shelved probably permanently is saying not that well. Creative accounting could make either look better or worse depending on Mothers agenda. So far the only semi low cost airline in Australia that has proof of concept is Rex. Even Jetstar uses Mothers buying power to get cheap airframes and airport deals, slots, advertising, fuel hedging etc, so it's no real case in point of working LCC in Australia, it is proof of an industrial relations device unfortunately.