That may be, It was the same with VS2008 as the runtime and standard C++ library were included too (no dependency on msvcr90.dll, msvcp90.dll or mfc90.dll) but runtime and MFC in VS2010 are slightly bigger (same as the other three but 100 instead of 90).

I know some people for small programs link against the system CRT dynamically (no version number in the files) because it's already loaded and shared in memory so they get lower disk footprint, memory usage and startup. But if I recall correctly that's not possible in Visual Studio, nor desirable either for a big program. Those files are meant to be used for system components, they are not as complete/efficient as the ones provided with newer versions of VS.