I don't think so
Was privy to the numbers on the Norfolk flights back when VH-RON operated the route.
It was definately a money spinner for the B734 and yes maybe because of lower costs (including salaries) Non payments of leasing costs to GE also contributed to the bottom line.
A B733 should still make the money if the leasing costs are low.
BTW OA are definately a lot happier crowd than the Virgin and Jetstar mob.
If you choose to live in OZ for lifestyle, then work in an Airline that gives you one.