The glass is 1365 x 768, but 1:1 Pixel mapping is achieved at 1360 x 768. NEC themselves defines this in their model info supplement to the manual and readily supplies end users with the official timings needed to achieve NR for their entire product line.
Hogwash the internal scaler of the NEC is not engaged when it receives a 1360 x 768 signal and it is not adding anything that is missing from the D2 because nothing is missing, it displays all 1360 x 768 pixels that is being output by the D2 with no additional processing. Three rows on the right and two rows on the left are not lit and unused.
You are mistaken as NEC defines Native Rate for 1:1 display as 1360 x 768 with my particular panel. If you want to disagree, fine by me, not worth arguing about.
I'm really sorry you are having so much trouble. Hopefully Anthem can and will add custom user defined timings ASAP or at least fix the 1366 x 768 timing for use with the Panasonic.