My mistake, didn’t realise they were also 16:10.
While you might prefer the Android OS (I certainly do not) I still find the 7″ form factor to be too small to be productive. It’s less than half the size of an iPad, and could never replace a notebook for me. Larger tablets like the iPad and potentially the Surface could. (actually, I switched from a MacBook Pro to an iPad + PC combo over a year ago now, and haven’t looked back)
If all you need to do is type up a quick response to an email or something, yeah, I guess you can do that on the Nexus tablet. But I would have no problem doing that on a phone either.
As far as usability is concerned, the 7″ tablets feel more like big phones to me, whereas the larger tablets are more like small notebooks.