I have the Spears and Munsil 1st edition disc, and read the article on their website, but it's way too complicated for me.
There is a PDF that has check boxes to mark off after looking at each pattern.
I would start with the chroma alignment pattern and look at the red stripe on yellow background. Does the pink blur on either side of the red stripe look symmetrical? Or is one side dark red and the other pink? You want to select the mode where it is symmetrical.
If you don't see a difference on the above pattern, then look at the chroma multiburst. Does the last burst on the 2nd and fourth row look brighter in one vs. the other? Go with the brighter burst.
The Panasonic player has advanced chroma processing, so if you let it convert to 4:4:4, then the 2nd row burst will probably be brighter than sending 4:2:2. If you disable the processing then they might be the same.