Oh - and with the LG WOLED you would not want to use a Correlation file.
I recently did a test about this. I calibrated an LG C9 with an i1d3p + a custom correlation file (I used my own i1Pro2 to create a correlation file using this C9 in complete reset state: unity 1D, unity 3D LUTs uploaded and I measure R,G,B,W at 100/100 lum/sat). Then I measured the Rec709 calibrated state with an i1Pro2.
Using 100/100 lum/sat W, R, G, B patches, the dE numbers were: dE 0.80, 1.32, 1.23, 0.77
One should expect dE~2 maximum error from an i1Pro2 compared to a reference spectrophotometer, so I guess my i1d3p copuled with a correlation file is just as accurate as my i1Pro2 on it's own since these two different kinds of instruments agreed within dE<2.
Of course it would be better if I could throw a real reference instrument into this comparison.