Going Boeing,
Cx was 3 miles in front for which runway? Same as you or were you for the short runway as is usually the case via Boree? Did you have any idea as to how many aircraft were in the sequence for each runway? Believe me , we don`t have any favourites but if there is a decision to be made most controllers/flows will back a domestic anyday. Ever seen a CX Airbus ( or any other Airbus for that matter ) beat a domestic from 100 miles. It just doesn`t happen. Or it didn`t until QFA started their "accountants" descents.
Maestro is a wonderful thing. Really. If your on single runway ops with 30 minutes holding for everybody. Under those conditions it will beat an experienced flow anytime in always having a trail of aircraft for approach to handle.
Any other scenarios ( // ops. config. changes, and a million other things ) it`s a piece of French merde. If we gave you each and every revised time for a feeder it comes up with you would eventually land and head straight for the phone to tear somebodys throat out. No amount of management BS will convince those of us who have to use it otherwise. Trouble is we`re stuck with it so we all have to make do.