with gold comes $, but $ cannot buy you a gold. see how much PV earn now after getting her gold in WC. plus when you retire, the gold you earned before will still generate into $ in terms of exhibition matches, interviews, or opening a badminton school. as for who is the GOAT, each has his own view. but i think the views of the professional players will be true and fair. so maybe one day if you happen to come across one, ask him for his opinion.