Actually Lightroom is much closer to NX2 in terms of editing than it is to Photoshop. There are no layers to worry about. The editing produces a list of instructions for the rendering of the file (like NX2 does) and it is easy to adjust and re-adjust changes. No layers, no destructive editing possibilities and everything is very intuitive.
If you are only shooting a few images at a times, perhaps you don't have a large DAM issue to manage (which LR does better than NX2), but if you are intending to print your files, produce galleries for the web or even post them to hosting sites like Smugmug, Flickr, etc., there are other advantages to LR (including hopefully Soft proofing in the next version - we can only wait and hope).
I always liked the quality of the images produced by NX and NX2, but LR is definitely worth looking at, even for the free 30-day trial period.