True but it depends on what you're looking for. Lightroom has noise reduction tools too but they are almost worthless when compared to a 3rd party plugin like NIK. Likewise with exporting JPEGs some 3rd party plugins can produce far smaller and simultneously higher quality files than LR can natively. The program I liked to above (also available standalone) is absolutely amazing for this purpose. Super small, high quality artifact-free JPEGs. It is really well written.
The NIK algorithm is so much better than the native LR tool I'm sure it is a cause for embarrassment at Adobe. The results in the links you posted are good, yes but NR/sharpening in NIK would have produced far cleaner shots that retained more detail. When I have heavy noise like in those examples I sometimes do a 2 pass NR. One in LR and the next pass in NIK. The other big advantage of NIK when used in PhotoShop is you can add and remove the effect using a layer mask on any part of the frame. By changing the opacity on the brush you also vary the opacity of the effect. This is another big advantage over LR because the LR brush tool algorithm is very rudimentary for NR. For sure the LR tool is a good tool and if it does what you need great but I stand by my statement that it is almost worthless when compared to NIK and more so if pitted against the added functionality of the brush tools and masking options available in PhotoShop.
