Is this an academic question or is the Datacolor software not doing something you think it should???
It is really a good question, and the basic answer is: no, it works fine.
The point is that I'm not able to get a perfect match between the MacBook Pro retina display and my external monitor, that is a Apple LED cinema display (old model, not the thunderbolt one).
As the MBP display is quite accurate, sometimes I think that the Datacolor software is not so accurate with the external display.
Any feedback from someone that uses this external monitor is extremely appreciated
Thank you to everyone else for the many suggestion received!
Color Eyes Display Pro looks nice, but it seems to be not compatible with OS X 10.9