When you fly at night under the long haul award, the credited hours accrue at a rate of 1 1/3 hours for every hour flown.
This does not mean you get paid more for night flying. It means, if you do a fair amount of it, that you get to the divisor faster and hence work less days in the roster. It is a way to take into account the more fatiguing nature of a lot of the "back of the clock" flying that LH pilots do.
On average, 744 pilots would work 3-4 days less per roster than a 767 pilot because of this facet of the award. The 744 guys generally needs this, due to the jet lag inherent in their operation.