Finally I think CX is tightening Oneworld Emerald benefits. They have been way too generous before at the expense of CX members.
IMO AA EXP is actually at max = a CX Gold since it is much easier to get and keep.
They should also remove priority baggage to Oneworld members which is in line with the Oneworld rules.
I cannot wait till the day where by they will rename the F Class section of the Wing and Pier to MPO lounge and limit access to CX DM and above and CX F Class pax only. Maybe just use the KA lounge as a defacto F Class lounge for Oneworld Emerald or send the QF/BA people back to the Hong Kong Lounge.
It is sad to see the deterioation of Oneworld benefits, but I guess when the Founding airline (eg BA) starts to pull the plug then there is no choice for others.