Of course, there is another issue that's sometimes overlooked when comparing a full frame camera like the D3s with a cropped format like the D7000, and that relates to DoF.
There's no doubt that the larger sensor compared at a specific aperture, shutter speed and ISO will collect more light and as a consequence will tend to produce less noise and a smoother tonality than the smaller sensor. This is something that MFDB owners are very much aware of.
However, if one chooses a specific shutter speed necessary to freeze motion, and a specific aperture for a desired DoF, say F11 on full frame to ensure that both the foreground and background are in reasonable focus, the aperture setting on the cropped format camera can be at least one stop wider and the ISO setting one stop lower.
Instead of a 200th at F11 and ISO 800 on the D3s, we would need a 200th at F8 and ISO 400 on the D7000. So, when comparing noise and DR from the two cameras, it makes sense to compare the D3s at ISO 800 with the D7000 at ISO 400, for example.
When we do this, comparing ISO 800 on the D3s with ISO 400 on the D7000, we see that the D3s has no DR advantage whatsoever in these circumstances. In fact, the D7000 still retains a marginal 1/3rd stop DR advantage.
However, in these circumstances the D3s still has marginally lower noise at 18% grey, marginally better tonal range and marginally better color sensitivity. But one wonders how noticeable this would be in practice.
Nevertheless, it's clear that above ISO 800 the D3s streaks ahead and its DR advantage over the D7000 becomes more obvious, even when compared with the D7000 at one stop lower ISO.