Have you been to a conference where some presenter asks to see a show of hands of how many people use Eclipse vs. Netbeans vs. IntelliJ vs. VI?
I have and the result is almost always the same. Hundreds of Eclipse users raise their hand and VI/Netbeans are at 4 or 5 people apiece.
Good news for Netbeans though. From my seat at JAX India the other day, I saw about 10 Netbeans users raise their hand (including 3 Sun Employees). So we are seeing an improvement there. The Eclipse count was still in the hundreds.
You have to give credit to the Netbeans evangelists (and EclipseZone) though for creating the illusion that the Eclipse-Netbeans competition is a dead heat.