When you f.ex use Delphi to create sleek fast application using a convenient RAD you will also have to use Borland's Visual Component Library. Without VCL you can't go anywhere without getting dirt on your hands.
The VCL consists of one particular unit (source modules in Pascal are called units) named "Forms" which handles the creaton of the top-level apllication object ("TApplication") which handles the Message queue and glues together forms (VCL's name on windows).
The Forms unit also declares a TForm class which handles creation of application windows and routes window messages to event handlers.
In Visual Basic you also have a huge library but this library is part of the VB Run-time DLLs. In Delphi this is linked statically with the executable.
MFC is also such a library that encapsulates most of Win32 API but MFC is also usually kept in separate reusable DLLs which means the application executable itself isn't so big.
You can separate out the VCL in Delphi applications as well but it's not a common practice among Delphi developers. This means a BPL file would have to be put in "windows\system32" folder.
So you have the choice between less clutter (link in Win32 wrapper classes) or less size (keep Win32 wrapper classes separate).
In Delphi the actual run-time libary (memory handling, string handling, kernel32 wrappers) is very small since Delphi's System and SysInit units use assembler code in it's functions to speed things up while in the same time making things small.
In one of my experiments I managed to get a smaller Delphi console application than the similar C version with the same functionality.
You can't judge the language by it's set of standard (or common) libraries. You can swap this out with your own library if you want to. There are many versions of the C standard library (printf, FILE* and family) and C++'s STL comes in many versions as well. The source code for Delphi's system libraries and VCL is included in the Enterprise versions.
Now we also got the D language which uses C stdio and stdlib.
Who has tested D language (http://www.digitalmars.com/d/)?