The best way to see such a comparison would be to use the display app with a known test image, since the CamRanger only applies colour management to displayed images, not live view or the interface elements, that and I've no idea how they are decoding my camera RAW file, so we have quite a chain of intangibles in the mix ;-)
The ColorTRUE app is also available for Android devices if anyone would like to try the experiment?
I'm quite likely to be using the CamRanger with my MacBook Pro rather than the iPad, which is somewhat more accurate anyway (if I don't move my head), and has CS6 on it. The main advantage of having ColorTRUE on the iPad with the CamRanger app was actually that it opened up shadows and highlights in viewed files (and warmed the image a bit). The colour management could be up to super whizzo category and it still wouldn't make that much more of a difference to my photography.
I suppose that a lot depends on what you want/expect from different types of kit, and how it meets your particular needs.
PS Glad the articles are of interest!