I assume that by "Thumbnail View" you mean Thumbnail Selector, I don't use Thumbnail Selector much as it's simply a utility which I'm not sure it will read the in camera settings or parametric adjustments made on the computer for rendering the thumbnails.
Nikon View on the other hand I find quite handy to have, it will read all parametric adjustments made in Capture while offering slideshow views straight from NEFs. It will also convert NEFs using all Capture adjustments, Capture slows down a lot when you convert a batch of files, but using View to perform the batch conversions frees up Capture to allow you to continue working.
CORRECTION - I said above that View NX can read and convert all Capture NX adjustments WRONG!!! It can read all camera adjustments tagged with the NEFs and it will display the images in full resolution with any Capture NX adjustments, but it cannot convert files that have been edited by Capture, so much for sharing adjustments. The batch conversions that I have been using View for have only been with camera settings applied.