I must have pporly woorded my question, which isn't about the avialbility of award seats for travle, but the different mielage levels required between TWA and AA for F/C award travel for one and 2 people.
I haven't compared the cahrts, but if, for example, TWA has an award for two business cliass tickets to Europe that is substantially below in miles the cost of AA's award, then a one may be better off using such award later on AA.