I would say more “out of the box”, as you only have to add a planar reflections component and that’s it. But that’s all. With all the missing features described, for now, it is less advanced.
Yes, indeed. But more can only come if the feature is designed to allow access to the render target and work on it in a material where
it will be finally plugged to diffuse or emissive. Otherwise, there will always be less control over the final rendering of the reflections (even if they add options like they already did - distorsion, fade-out distance, etc…) than working with scenecaptures and rendertargets.