Tim,
However much more range the aircraft might have had if it had been filled with fuel, you have to understand we only take fuel loads appropriate to the actual flight. The 200-LR is capable of longer flights than that (Out to around 19hrs still with almost a MZFW load) but that doesn't mean you landed is Sydnay with three hours fuel on board- more like one-and-a-bit if Canadian use industry standard flight-planning.