i guess a windoze xp or 7 would be a lot better to use with this kind of hardware. in fact i cannot think at a more inapropriate os to run on a nentop than vista.
maybe the performance delta would be the same but the usability would be more than "acceptable".
regarding the "benchmarking" stuff... i do not think that anybody sane would buy a nettop to use it for hardcore photo editiing or transcoding.
if i'd buy a nettop i'd be interested in several factors:
- to be powerfull enough for office work and maybe hd playback
- to use as little power as possible (which nano does nicely) as this kind of device would be rarely powered down
- to be silent (which nano is)
i think that performance per watt is irrelevant here as a system like this is not meant to be "performant". i think that the one that uses less watts, has more features is queter wins here.
my take on this is that via has a very nice platform and nano wins even if it's not the fastest.