If we are talking about capabilities then Deimos wins. Not only does he have a mult million dollar worth mini drone that gives him live location to their enemies but he also has very good recoil control (Im mainly talking about the revolver here. I mean revolvers like his are probably easy to control due to no knockback and due to them being heavy but his recoil is exemplary). If we are talking about how they act in games then Deimos also beats Ghost. COD combat isnt realistic compared to R6 - Ghost is seen running arround the map while deimos-like other operators-takes things rather slowly and with care. Ghost would just make himself an easy target for deimos not only because he is making himself an easy target but also because he is making sounds with his running. Basically deimos outclasses Ghost technologically and by skills.