Exactly. Thats what makes AA a great GM in that sense. He is great at communication as it shows with his ability to sign players to under value contracts as well as get a lot of trades done. What should happen is AA use all his staff including the analytics guys and get opinions of what to do. AA then being the great negotiator he is, can get these trades and signings done even if he isn't the most analytically inclined person.
I think that above scenario is exactly what has happened this offseason.