Off topic
...There is no Qantas policy to provide additional baggage allowance to non-Qantas oneworld Sapphire's, but it seems a Qantas CS rep has waived the official policy and provided this to you. This is an exception, not stated policy.
http://www.qantas.com.au/travel/airl...r-destinations
I suggest some one is getting confused with
Extra baggage allowance
As an Emerald frequent flyer you can check in one additional bag for free in addition to your ticketed baggage allowance when you fly on oneworld airlines. If your ticket mentions a weight allowance, you can check in an extra 20kgs (44lbs). (This benefit is not available on British Airways 'Hand Baggage Only' fares on select short-haul routes.
http://www.oneworld.com/ffp/emerald-...8451A75370DADD