Hi Marc
Lets see if this works.
I copied the high res jpg into PS CC (OMG) and di a full res 1024x1024 crop and saved it as a JPG.
I then used Topaz Detail, Micro Contrast I set to Default on a new Layer and then set that Layer to 67% so only 67% of the effect was active and saved it as the 2nd JPG here.
Hope you can see the subtle difference.
Cheers
Dennis