Not just you.
It'll be due to it being upscaled. Presumably VT upscaled it to 'x' size from it's native smaller size, then saved it down again to upload here on the forum.
Also, I doubt you'll be able to run those NM posters successfully. Regardless of the filters used to try and disguise the issue with resolution, I just don't think they will reproduce well at all.
Maybe someone can come up with/provide some better artwork...
True.
The other problem with NM is going to be the very dark tones. The printing process and glossy paper has a small issue with black heavy tones.
On top of that, the NM source I have isn't great, so upscaling it is having some problems. I'll get it perfect eventually.
I'm working on getting very nice and crisp source art for NM. Just going to take some time.. if someone else can provide it, I'll do those ASAP.
BTW, Here's the DOJ DOJ BL print I did. It's glossy and the colors jump off. the slightly lighter red on the right side of the pic is glare from the light. Seeing this thing in person is really awesome. My camera is washing out the colors a bit.