Comparing the 787 to A330 on an MEL/LAX/SYD seems a bit silly as the A330 doesn't do it.
The best comparison would be to look at a complete proposed roster of what the 787 will likely do (LAX, DFW etc) v what the A330 currently does (HKG, SIN, etc). Look at the overall credits, duty times, days off, TAFB etc.