I think he's referring to the Tiger and MH-90 buy, Pegasus. He's not the first to express reservations about the ADF operating equipment, however good, that would not be able to make use of the huge US logistics system should spares/repairs/replacements be required for the Australian helicopters when they would most likely be operating alongside US forces in most planned for scenarios.
The ADF is buying the Abrahams tank with a view that spares would be easily accessible from the Americans and comms equipment etc would be seamlessly compatible - and if necessary, the Australian crews could be deployed to a remote theatre and be plonked into a US Abrahams.
Many would have thought the same thinking might have been applied to the chopper buys, to say nothing of the strength of the Euro versus the weakness of the USD, which has mede the European helicopters that much more expensive for the Oz taxpayer.
Is there also any truth to the rumour that the version of the Tiger the ADF is getting is, shall we say, not exactly compatible with what most would think its most likely role will be?