I dont think that you could even make such comparison between a IDE an a Text editor with some highlightings.
it is almost IMPOSSIBLE to create a full scale (enterprise) projects with a mere text editor…
it would be a very time consuming and frustrating task to build the system and deal with classes.

I have noticed that alot of PHP developers tend to use these text editors… Im quite sure that with the making of OOP more dominant in the past few PHP releases (and the future framework by zend) a “bloated” IDE will become more popular by developers around.