It's not more detailed whatsoever. In fact the colors are so over saturated that it obscures a tremendous amount of detail. Not it mention to black crush that is caused with which you'll also again lose a significant portion of detail.
A properly calibrated display in RGB Full (if calibrated correctly) should look indistinguishable from one set to limited. In fact there's a lot more color banding introduced (bad video artifacts) when RGB Full is enabled. This is due to the game being created to run natively on limited - then the PS4 converts it to the full spectrum resulting in conversion artifacts.