Thank you all for the input, I really appreciate it
I did some research, and while it does seem kind of unclear, looking at the AA.com and CX site, it looks like I should be able to get into either lounge because i am a oneworld customer flying F on a oneworld carrier.
Can't seem to find any info on BA specifically, however this is what i was able to find on the Oneworld website:
"The oneworld Lounge Access Policy"
Lounge access is provided on a complimentary basis for designated premium passengers or for top tier frequent flyers with limited exceptions.
In all cases, lounge access eligibility is based on:
* Departing carrier - you must be flying on your next onward segment, on the same day, on a flight marketed and operated by a oneworld member airline AND
* Frequent flyer tier status - you must also hold a frequent flyer card equivalent to oneworld Emerald or Sapphire status, OR
* Class of travel - you must produce a First or Business Class boarding pass for the journey's international segment on the same day.
So which lounge do you recommend? BA or CX (seeing as the consensus is AC is a disgrace)