Both of these versions of Ravenloft aren't very playable - which is a key concern of 4th edition creations. They don't really work as a campaign setting but could work as one-off adventure modules.See, there are two types of Ravenloft...
The "gothic adventure setting" where the mists pull you in and the PCs spend most of their time trying to escape (original box-sets)...
The other is the "Gothic Cliche Campaign Setting" where you start as natives in a world run by every Hammer/Universal movie monster and you're goal is to make the world a better place because you ultimately can't beat the dark powers (Domains of Dread, Arthaus 3e)...
Ravenloft needs significant revisions (which will anger some fans based on observations of ire about Planescape/Forgotten Realms displayed here) to be a setting for continuing campaign play. I agree with the post that Ravenloft could easily be a great "points of light" campaign setting if some of the Monsters-Rule-The-World zaniness is toned down. A well crafted Ravenloft campaign setting could even be used as just a region (aka Transylvania) by DMs within their homebrew world.