title: VS2013 "v120_xp" as platform toolset by default
body: <p>In order to deploy C++ application built with VS2013 compiler under Windows XP, the "v120_xp" platform toolset has to be set: this make it possible the deployment from XP to 8.1. So next come the question: why this platform toolset is not the only one and the default? The "v120" platform toolset is suitable starting from Windows Vista. Is there any performance drawback? I've tested an application built towards both the platform toolsets under Windows 8 but I've seen no difference in performance (apparently..).</p>