Any camera can have good low light capability, particularly if you're just shooting photos. Nowadays digital cameras can use methods like stacking and dark frame subtraction to remove noise. Some others just have better hardware to make the process easier.
I personally vouch for Sony's low light performance, but they are not my cup of tea when it comes to handling and ease of use. Plus, my clients don't pixel-peep so I'm quite happy with the files I can get from my 70D and 5D2.