Originally Posted by
anabolism
You could always have the AA RTW desk price a ticket, and then have CX do the same.
BTW, the AA RTW desk is usually good about booking the non-codeshare if you prefer, as long as there are some AA flights. You could always book it originally with codeshares and then call later and switch.
You can also use ITA - it lists the fees and taxes so you can see how carriers compare on any given segment[s]. Rather instantly, compared with waiting for the rate desk.