On the surface of it, it is curious but when you delve deeper into the mind of the "Simpler and Fairer" mantra you seen realise that the 5 year olds who conceived it didn't know that YVR existed because QF didn't fly there at the time so they didn't include it in the "East Coast USA" bracket (I do realise it is technically East Coast Canada) and therefore by default it got lumped into the "Extra Long Haul International" bracket when it was introduced as a destination and therefore earns from that bracket.
Simpler for the monkeys who invented the system because they didn't need to consider future QF destinations and Fairer for QFF because it means you are less likely to achieve status so it costs them less.
Simpler or Fairer for you, the pax... nooo, certainly not but then that is what Simpler and Fairer is all about.
QED!!