You redeem AA on SWISS like any other award. 0.01 per mile Awards to think about:
econ US/Canada on AA= 25k SWISS miles=$250 (pretty good even from priceline standpoint for LAX->BOS)
1st class US/Canada on AA =40K=$400 (unbeatable!)
LAX->London on AA =150k miles better than 200k on QF
Swiss is useless for trips to Asia except japan on AA however