Acer CEO Jim Wong isn’t shy about voicing his displeasure with Microsoft and Windows 8, but now he’s taking the discussion in a different direction. Wong said recently that Chromebooks account for between 5 and 10 per cent of Acer’s PC shipments to the United States since November 2012.It’s difficult to say what exactly that means. Acer isn’t doing as well as it used to in the US, and the company lost a spot on the laptop sales leaderboard after being passed by Asus. In the final quarter of 2012, Dell snatched away the number three spot globally. It’s possible that Wong is trying to put a positive spin on things by flogging the “success” of a product that only two of its competitors are currently offering.But what kind of success is it, really? Somewhere around 1.5 million of Acer’s quarterly PC shipments are destined for the US. If Wong is speaking specifically about November and December, that means something like 75,000 to 150,000 Acer Chromebooks were shipped. And that’s in the super-busy Christmas quarter.And once again, this is shipments and not sales we’re talking about. How many of those thousands of Chromebooks were actually sold?If you take a look at Amazon’s sales charts, it’s true that some Chromebooks are selling well. One, anyway: Samsung’s ARM-based version. Acer’s Chromebooks don’t appear to be doing quite as well — on Amazon.com or anywhere else.Certainly the potential exists for Chromebooks to make a splash, but right now Acer’s bread-and-butter in the U.S. remains the same: inexpensive Windows-based laptops. However “strong” C7 sales have been since November, they’re a distant second.