Difference between winning and losing a badminton game

What makes a badminton shuttlecock great? Shuttlecocks production have 3 parts: Raw feather purchasing, Feather Piece manufacturing and Shuttlecock manufacturing. Many brands outsource their production to Shuttlecock Factories that neither own a feather piece factory nor buy their own raw feathers. To maximise profits at each stage, those factories will mix in inferior feather which means quality are inconsistent and not getting the quality you are paying for. RSL shuttlecocks are made differently. We o