I wouldn't say that, unless it's made a major leap since I played with it back in March or so. Unlike Dreamweaver 3, NVU has zero support for scripting. No JSP, PHP, ASP - nothing. Actually, that's being generous - it has less than zero support for scripting. Example: so NVU has no facilities to help you create scripts, big deal. Let's hand-roll a little script and import it in - easy, right? Now watch NVU corrupt your carefully hand-written script by treating it as a CSS object. Oops.
Bzzzt. Someday it might be useful, but as it is right now, it's not anywhere close to being useful on a day to day basis, let alone being as good as Dreamweaver 3.
I just installed it on my box and it does have jsp, and php support..