They( sing air) are a pampered breed and should not be mentioned in the same breath as CX.
From what you post it sounds as though you really don't know anything at all about Singapore Airlines
routetuner.
All airlines have had their problems, LH at Kai Tak, AF off a small island with a B744, BA in the game park, QF at BKK, the last one could very easily have been as bad as SQ at TPE, (it wasn't a taxiway, it was a parallel runway that was under repair).
You will be telling us next that SQ get preferential treatment from ATC at Changi - before you do please take the trouble to go up and visit ATC, then you will see that everyone gets treated the same. If you want to see ATC bias in action try getting the right hand westerly runway at FRA when there is a LH anywhere near!