I was much more of a WW fan (VtM, as well as its companions WtA, MtA, etc). I haven't touched the D&D world since AD&D 2nd edition. I'm a fan of the simplicity of the 1-2 dice type systems (d20, d10, whatever) over the many different dice for AD&D (one friend even had a d100 for "real" percentage rolls). When I played VtM (2nd edition, not the newer 3rd), it had a good number of dice rolls for simple skills, much like AD&D. Combat was a lot faster (1-2 dice rolls per attack), but it was definitely there (not in an overglorified action film kind of gratuity...mostly). It really depends on how the DM organizes the story.
Anyway, I'm up in Glasgow with no books (even Cyberpunk 2020 is packed away in the States). I'd love to play again!