My personal opinion, so anyone more than welcome to tear it apart if they want, but the RAAF have had the upper hand ever since Hawke decided to get rid of the RAN's carrier capability and all but obliterating the FAA. And I can tell you they fight tooth and nail to maintain that position, I actually find it extraordinary that not only did the RAN manage to get the phat ships, but that they got the ski ramp left in the design as well. I know the official face put forward has been that of Tri Service harmony for this new "Purple Assett" but behind the scene's would be a very different story