until the day that you can crop the center of a FF camera output and it will look the same as a APS-C camera output, i think "extra reach" is fair enough, given that there are scenarios where APS-C uncropped might do better than FF cropped.
to say that something is not true when it's in fact, debatable, is not being objective.
see this discussion on the subject, william porter seems to explain what i 'm driving at pretty well there.
read this as well, which makes some sense, but i'm not sure if it's true; it says:
what is DEFINITELY true is that focal length does not change, that is simply a set characteristic of the lens. field of view changes. anything else related to this, is debatable.Another positive affect is that almost all lenses are much sharper in the middle and softer on the edges. How can this be a good thing? Well with a camera that has a crop factor you only get the center of what the lens sees (unless it’s a lens designed for crop factors as described above). So with a crop factor you only get the center and therefore the best performance from your lens.