Overrun , Cant argue with those figures.But as you said and as the next poster stated. It depends if you are comparing apples with apples.
Your comparison makes the A330 a more efficient machine without question. However as the next poster stated the 777 can complete missions the 330 cannot in terms of payload and range. So its a strong competitor in both the medium range sectors you described and the long range sectors. Whereas the 330 would require a pitstop to complete same mission on the Longrange/Ulr sector. That would be very pricey.
So the 777 can compete for the medium/longrange and ultra long range trophy and overall if the comparisons were done I think we would find it interesting.
Although I must say I would rather sit in a A330 for 17 hrs ( if it could do it) than on the 777 torture device of a seat. I truly hate the seat on the 777. For all the economics in the world I would rather sit comfy.