If I understand this correctly, the translation is not a 1:1 equivalent, but it's not wrong.
The German Dr.phil. apparently corresponds to any PhD in the humanities (not just philosophy). Dr. phil. is one way to translate PhD E>D, but not the only way. So it would probably help to add other possible translations too.
I would also suggest including both spellings of PhD, with and without periods (the same for BA, MA, BS, MS, MD, JD, etc.). The spelling without is more modern and increasingly preferred, but the traditional spelling with periods still exists, at least in AE, and is not wrong.
PhD (also: Ph.D.) (abbr.: Philosophiae Doctor) - Doktor, Doktortitel; Dr. phil., Dr. rer. nat., Dr. theol., Dr. med., etc.
Dr. phil. (Abk.: Doctor philosophiae) - PhD (in the humanities)
Dr. rer. nat. (Abk.: Doctor rerum naturalium) - PhD (in the sciences)
I also agree with holger that 'doctoral level' looks dubious; I would suggest changing that to
Doktortitel - doctoral degree, doctorate
As AndreasS suggests, it would be difficult if not impossible to list the closest correspondences among all the other more specialized advanced degrees, since in many cases there are no exact equivalents. There should still be several threads in the archive that include discussions of, for example, advanced medical and legal degrees (sorry, I'm too tired of nonworking links to look for them myself), and Wikipedia has fairly exhaustive descriptions. Anyone wanting an overview could start at http://en.wikipedia.org/wiki/Doctor_of_Philosophy
; just be sure to read the links as well.