I know there are other threads on this but circumstances change and are unique to situation. I am BA Gold for Life and Gold Guest List (but about to lose that) and based in US. So...

I am commuting weekly to Boston from PHL on American
I have 2 transatlantics coming up over next 3 weeks that I can credit to BA or AA
I will be doing 6+ longhauls (biz) a year

Do I switch to AA. I have noticed that AA status helps more when there is a disruption but obviously don't need to earn status for lounge bags etc. I could apply for AA Credit Card and have the BA Credit Card.

I have asked the experts on BA forum too.

Tx