Your maximum bet is...

American Airlines have ridiculously ambiguous info on their website concerning baggage allowances. 

With Qantas Intl to the US you're allowed to take 2x 23kg bags for check-in and a 18kg~ for on board. 

Dad rang AA this morning about their stupid website and got the following;

"If you show your Qantas ticket (International) on AA you can take 2 bags on all 3 flights & the allowance on board is 10k"

Pretty sweet, I reckon.