New NEX 7 has a name. What do you want in the 7m?

And that's precisely what I have said, they looked at the image at 1:1 level!

Assuming your screen has 150dpi; looking at NEX-7 24MP image at 1:1 level would be equivalent to a 40" size image. While doing the same for the NEX-6 16MP image at 1:1 would be equivalent to a 32" image! So you know which image would look better!

So if you shrink down the 24MP to the same output size as the 16MP, most the extra noise you saw at 1:1 would disappear.

No, the difference is very small.

5N's 1079 score over 7's 1016 score represents a difference of less than 0.09 stop!

But you don't look at photosites or each individual pixels when you look at images!

Even though smaller photosites would give you more noise individually, the noise is reduced when you combine them. As you shrink the image, the noise gets less and less.

The key is the total amount of light gathered from ALL the pixels. That would determine the low ISO noise and dynamic range.   And that's why it is the sensor size which matters, not the individual number of pixels.   One good example is RX100's 20MP sensor actually slightly outperforming the Nikon 1's 10MP sensor (though within the same ballpark performance) - both have 1" size sensor.