Said it awhile ago, as I saw the annoucement live on the ABC the CN was not overly impressed. He knows which way his bread is buttered and won't rock the boat.
But sometimes you wish you can be a fly on the wall in some of these meetings
I saw the news clip. I didn't think VA Tim Barrett look uncomfortable. In fact, I think he would have understood the decision and would have somewhat supported it. I think a decision of this magnitude does not purely take a platform into consideration, but the whole growth potential and ongoing sustainment, cost and opportunities, political implication both local and international, and ultimately technology changes.
I suspect the German is pitching a sub that looks really good on paper, but the CEP selectors have real doubt on the German's experience in delivery anything bigger than a 2000 ton subs like the Israeli's Dolphins. The Soryu on the other hand lacks range plus the technology is evolutionary, and by the time Australia is ready to cut steel, most of the technologies are no longer forefront and would provide RAN an edge.
I can see that the selectors are seduced by the pump-jet technology, plus a boat big enough to one day turned into a nuclear powered one. The French definitely caught on the RAN's key requirement of the transit speed and range. I believe the former CN had often stressed the need to have long range and relative high transit speed. This is definitely a capability the Soryu is seriously lacking.