With the looming arrival of Surface with Windows 8 Pro tablet, the Surface RT has had ample time in the sunshine to finally be judged. Latest estimates put Surface RT sales number at 1 million units (since its October 2012 launch) while most analysts expected Microsoft to shift twice as many. What went wrong? We take...

With the looming arrival of Surface with Windows 8 Pro tablet, the Surface RT has had ample time in the sunshine to finally be judged. Latest estimates put Surface RT sales number at 1 million units (since its October 2012 launch) while most analysts expected Microsoft to shift twice as many. What went wrong? We take...