Using native lights, edge softness is controlled by Inner & Outer angle. Falloff, Gradient Colored Edge, Rad. Decay, Clipping... all help in defining shadow sharpness like with AR/Physical...
Oh, I see now none of shadows really work.. ?
BTW
To get sharp shadow w/ Corona's Area light, make it really small (just like IRL)
and for realism sake, best is to model casing/housing & put IES profile inside. This way you can get "perfectly correct" results.