"They were some big, bruising men. Every team adapts to what you've got on your roster.
"If we can be as good as what we were in attack last season I'd take that, our growth really is in defence, we conceded way too many tries and often too easily.
"We are doing things differently to how Australia want things done, it's a nice two-way conversation, I believe diversity breeds a really good outcome."
Brumbies coach Dan McKellar said there could be alignment around core skills but "I think around how one team will defend and one team will attack, that's where the coaches have to make up their own game plans. I don't think Michael would expect that of us."
Australia's coaches will also make executive calls that could overrule Cheika's requests if they feel a particular match is too important for their own campaign for a star player to sit out.
McKellar was the centre of an ugly tug-of-war last year when he was asked to stand down David Pocock, Scott Sio and Allan Alaalatoa from a match against the Sunwolves so they could be fresh for the test against Ireland.
The Brumbies, facing crowd slumps, rejected the idea and in a compromise played the trio for the first half only.