I don't think that the editing experience is the biggest selling point in VIM (although it can be very good). I think it's the ease of creating and integrating

I don't think that the editing experience is the biggest selling point in VIM (although it can be very good). I think it's the ease of creating and integrating custom tools for the specific problem that you are dealing with, sometimes even for one shot demands. It's orders of magnitude easier than creating a plug-in for a mainstream IDE.