600ftlb - no real arguments from me.
With my limited direct experience of Qantas the biggest issue seemed to come from the system of maintenance. What was received as a pack from QF was massive when compared to everyone else. It may be that some of the additional works were necessary and critical, but the general word from the technically aware guys (LAMEs, engineers etc) was that QF did a whole lot of unnecessary works.
One of the things JHAS often gets criticised for was the early freighter checks and that they were done too slowly. When you bear in mind the contract called for spares from QF that were often "accidentally delayed", or thrust reversers that were supplied out of shape, or the on the spot determination that the fuselage had to be scaffolded it becomes very obvious where the additional costs came from. That is where the vast majority of the inefficiency comes from.
There's a whole lot more but that's history now. As has been pointed out JHAS has had their chance, and barring a miracle that's about all they are going to get. Which is a real shame because that base is a fantastic facility. There should be a future for both it and also the QF Tulla facilities.