^^^^^^^^^^^
Exactly my first thought too! Don't forget idle reverse, lessor flap & the new app to quantify precisely the savings in every phase of flight. I always wondered why my decent fuel was only half to a third of the flight planned burn, yet the actual FOD figure was always about what you would expect. A fudge in the system to make sure almost everyone "under-burns" compared to the flight planned figure?
It makes complete sense now. Thank you Rated De.