Looks like they got it for on time departures to if i read correctly. Good on em.
QF often bang on about arrivals but this ain't worth a pinch a s..t .
Another point is how one carrier measures it to the next is different and QF's is based on ACARS (correct me if i'm wrong) whereas the others are not so you could only say that QF's are the only truly 99% accurate figures.