I haven't published anything about Jetstar domestic. The issue here is Jetstar Intl.
So far we have found that almost half of its quoted passengers are actually domestic passengers in Australia and NZ. Then we find that the routes and aircraft that were gifted to it from mainline are operating at a substantial reduction in load factor in comparison to mainline, and very probably yield as well.
Jetstar International has shrunk the Group's Japanese market. It has probably done that elsewhere as well, but it is difficult to make a direct comparison on most routes.
Maybe you should pay attention to the actual thread?