I might be NetBeans biased as the author is Eclipse biased but here is my feedback:
RCP applications are developed exactly the same way with NetBeans or Eclipse
I agree here, what makes the difference IMO is the user friendliness of the IDEs. I'll get back to this later.
Eclipse RCP vs NetBeans RCP starts with… SWT vs Swing
I disagree here. If you check here, you can see that SWT vs. Swing turns out to be one of the most common reasons to choose NetBeans over Eclipse as the platform. There are various reasons given but I won't get into details, just the facts.
NetBeans is not an OSGi platform, but…
IMO this was the only big difference from Eclipse until recently. There are even studies about NetBeans implementation performance being faster. See more details here.
NetBeans has an publisher, Eclipse has an ecosystem
This is an issue already identified by the NetBeans community with some work and discussion happening on the background as you read here. both approaches have their pros and cons but there's no denial that Eclipse approach has worked better than NetBeans based on the amount of projects. But this is the only difference. Hopefully this is addressed soon enough.
NetBeans is homogeneous, Eclipse is heterogeneous
Having NetBeans as a single project gives its "homogeneous" characteristic that leads to being more user friendly, standard, etc. like noted in the article.
NetBeans has some tools, Eclipse has a lot of projectsIMO here we lost the author into mythology. Again the difference here is the amount of community support between the two IDE's. This has been changing as we see more projects handed into community hands.
So its a matter of community support to the IDE, and believe me, we're moving in the right way, so watch out!