Disappointed With NGC World Coin Grading

I have submitted a few rare and crudely struck coins to NGC recently, and have been very disappointed in the grades that have come back. These are coins that are very crude to begin with, and it seems NGC does not take that into consideration.

One example would be the Philippines Quarto. I first posted them here to find out what they were, and they were quickly identified and discussed. Surprisingly, NGC doesn't seem to know much about these coins. The 1821 was agreed to be AU to UNC, and the other dated at 1829 from the picture. NGC graded them both F12 and no date on the 1829. No device retrogrades were identified either, but that may be normal.









Another one is my new favorite coin, a Guyana 1/2 Real, that I never plan on selling so the grade doesn't bother me, but I think they got it wrong again. It makes me want to crack it out of the slab I just paid to put it in.








There are more, but this post is getting long. I'm just frustrated that what I see does not seem to match what they see. Submitting coins is an expensive and arduous task. Am I asking too much? Is anyone else seeing this?