Okay, just compared my two files. Here are the differences:
Contrast: 3D Day: 94; ISF Day: 93
Color: 3D Day:49; ISF Day: 48
Sharpness 3D Day: 4; ISF Day: 0
Color Temp: 3D Day: Normal; ISF Day: Warm 2
Panel Brightness: 3D Day: Normal; ISF Day: Medium
Hope that helps. Just for you to see how my calibration differed from ISF Day to ISF Day 3D. I was wrong when I said is was more about Contrast...sorry!