Microsoft Surface RT which uses an ARM based processor and competes with traditional tablets like the Apple iPad and Android flavored slates, owning the Microsoft Surface Pro is similar to having a mobile version of the desktop computer in your office. Competition for this version of the Surface comes from laptops and notebooks. Your legacy Windows apps can be installed, which is a good thing considering that while the Surface RT has Word, PowerPoint and Excel pre-installed, those buying the Surface Pro will have to install their own version of Microsoft Office.
It also should be pointed out that at 5 hours, battery life is about half of what is achievable on the Microsoft Surface RT and the Microsoft Surface Pro weighs two pounds, heavier than the RT. Last week, IHS iSuppli estimated that 1.25 million Microsoft Surface RT units were shipped in the fourth quarter, but only 55-60% of those units were sold resulting in actual sales of only 680,000 to 750,00 tablets in the quarter. In addition, the research firm's Rhoda Alexander said that the Microsoft Surface RT was experiencing a high return rate which was blamed on "a steep learning curve of the [Windows 8] OS -- which is not necessarily intuitive."