I'm a bit new to the FT community, and points/ status in general, so forgive me if this is a bit elementary. I am trying to figure out the easiest way to earn Sapphire status with OneWorld alliance.

For example, should I try earning AA Platinum and have that transferred? Or should I try to go through one of the other airlines under OW? Is this generally just a decision based upon what I fly most? I am in the US, so AA would be the airline I would be flying most from OW's list (I believe AA is the only American based airline a part OW, correct me if I am wrong here).

I found this chart online, but still not very sure I understand.

To get down to it, I am trying to find the easiest way to earn Sapphire status. Any advice would be greatly appreciated!