What if you have not two but 1000 actors, of different kind, weapons, characters, vehicles, whatever. How would your code look then?
Also, actions in 3dgs can hardy be compared to components. Maybe to a script component, but that's only one flavour of components you could have in a real component based architecture.
Yes Unity scripts and 3dgs Actions are similar items
Unity supplies a complete set of prefabricated components while in 3DGS you must create your own components using lose functions
Of course a traditional engine does not come with the class Actor only
It supples different kind of classes
such as the class Vehicle or the class Camera , the class light or the generic class Object for non animated items such as weapons
