Also remember the QF 380s are some of the first ones of the line. The heavy weight 380 at EK, at 575t MTOW burns 900kg per hour less than their first 569t MTOW ones. The newer one carried max ZFW to Houston in 16hrs. And departs with a full pax load to LAX below MTOW for a 15hr 30min flight. it operates a 380 AKL to DXB with 40 seats blocked. It would not be able to do that with one of its earlier aircraft.