Both the Nikon D600 and Sony NEX-7 have a 24MP sensor, though with the Nikon unit having almost twice as much surface area the assumption is that because the pixels are larger they will produce better results. I wanted to test that to see if the larger 35mm sized sensor did indeed produce better quality with particular regard to high ISO performance. What I found was that as a general rule, my assumptions and I guess everybody elses are pretty much the way it is, though there are a couple of instances where the NEX-7 throws up a couple of surprises.
The Nikon jpg. has a fair amount of colour noise and while the Sony file is very processed it does produce an acceptable result, better than I would have imagined. Having looked at the raw results its pretty obvious why this processing is necessary, but the Sony camera has done a good job with the jpg. in this example.