It actually is on AA, but not straightforward to find. If one looks in the PLT (probably GLD and EXP as well) guide, there is mention of the mileage bonus, and a URL for further information. This is:
http://www.aa.com/content/AAdvantage...itestatusbonus
Once here it is easy to note that JAL is
not included...
Cheers.
When I forget or need to recheck, this is easier for me (no digging required, url is easy to type in). It takes you to the same place, but doesn't wear out your fingers typing
http://www.aa.com/elitestatusbonus