Nikon J1 is 10MP, NEX5 isn't.
Nobody's saying that Sony is better or worse. It's just you comparing the Nikon 1 to the NEX5, and you got what it is.
No, what you'll get will be jagged contours.you'd have a chance of pulling the details because there isn't the base luminance noise in the file.
Luminance noise isn't a problem at all…
Who said you that it passed some kind of NR?If the noise is that bad in the J1 files AFTER running through the in camera jpg engine
Whatever, it has more details than the Sony's, look at the color strings, Sony looks like a p&s camera.