No, see, you're right. The problem is that while P11 you could say 'do it at 300 regardless of what size I specify and it did it, in P12 no matter if I tell them to do 300, it will produce 72. Absolutely regardless of size. And 300 was (and as far as I can tell, still is) the standard for images to hand for printing.
Sooo-this means I have to blow up my size of the images absolutely huge to produce suitable for printing, because my rendering program is unable to understand what I tell him. And so far the only answer I go (a year ago) 'we know and working on it'.