If the economic crisis lasts well into 2010 as some have suggested then DL might find it tough. No doubt their plan would be to subsidize it for a period to see if it will support itself.
It also no doubt hopes to draw some significant traffic to its domestic network from the SYD-LAX leg.
If it starts to take some significant traffic from SYD then that can only benefit us although it does seem to need to review its pricing at the moment to achieve any significant effect.