"sustained fuel price drop, as well as the fall in the AUD from $1.15 to 0.77c"
Both of these contribute to a short term airline windfall but are systemic of greater problems brewing.
According to the Brookings institute "oil prices have been in a free fall, with demand dropping across Europe, Japan, India, China, Brazil"
The major contributer to a drop in oil prices is the significant drop in demand as a result of a global slowdown. Dancing a jig over cheap oil is false economy.
"Professor, please enlighten us as to which airline Ceos are paid more than Mr Joyce??"
About 30 seconds of research found that the CEO of DL for example was paid in total about 15m for one year. Probably more out there but I think you will find the several million Joyce is paid is not that high compared to many.