The one in VS is the same one from Windows. It is just pre-mapped to the
directory where the VS tools are, so you don't need to type in the path to
the tool, you just type the tool name.
It's the same command interpreter behind both of them. The difference is
the VS command prompt sets up some environment variables and path settings
for you so that you can access most of the executables and other tools
directly from the command line without having to know their actual location
on the HD.