I'm a big fan of the racing at Saratoga and if I went I'm sure I'd love the atmosphere & and scenery
my point was that a derby or breeder's cup is going to get more of the top trainers and horses showing up from all over the country (and world), thus making it a more inclusive event(s)
as for a fan not close to the east coast, they would have a better chance of seeing a BC because they move it around, or going to a derby because it is more centralized
for a trainer/owner well they'd keep their horses out west until BC time
that's simply my point...I'm sure you could ask people which they'd like to be at and the majority probably would say Saratoga, but people can't just be beemed up there from all parts of the country...a better question would be how many derbys have you been to, how many BCs, and how many trips to the Spa? not so much which provided you with the best experience
as I'm sure Saratoga is a wonderful experience everyone should go at least once I would urge, myself included