Apparently the platform's shortcomings weren't due to just the Atom being a superior CPU. According to Fudzilla, VIA has actually admitted that there was a manufacturing defect in some boards. The flaw was in part due to the Nano being part of an older board that had been retro-fitted, not one that would see the market. The actual boards that will reach retail, they claim, don't have any defects and will show much better performance.
I would like to see updated benchmarks for these new boards posted once they are in the hands of reviewers, especially since VIA for so long has prided themselves on being a big name in the embedded PC market.