Clean aircraft generate impressive numbers, those in war-fighting don't.
I recall the 20 Sqn Hunters from Tengah, going to to Seletar for a major service. There was a roster! Tanks, pylons and, IIRC, even the Sabrinas were taken off. A clean Mk 9 ... Anyone here with a 20 minute trip in a stripped-down Hunter before fuel became a bit 'interesting'?
I was 20 Sqn's ATCO, so they told me these things. I only ever got to fly in the NoMotion Sim ... dammit