It looks like WN's departures outnumber AA's, but with nonstops to BOS, ORD, DFW, HNL, LAX, MIA, JFK and STL, I gotta believe that AA still schedules more ASMs from SFO than WN. Guess it depends on how one measures size of an airline.
I agree that AA hasn't scaled back its SFO operations much; SJC is where AA has really scaled back.