I believe that some routes do and some routes don't. I am not sure which are which though.
I assumed at first when the OP said code share that she is flying with AA on a BA carrier which means the BA aircraft information would apply; however if she is flying on an AA aircraft and booked a codeshare through BA or Iberia then she would be looking at information on the AA planes. When she comes back and clarifies someone here will be able to help her