Excidium is actually right in this, the interesting part of VtM:B's writing is the source material. They didn't do anything novel with it, they just used it and surprise, surprise - good source material, good end product. Some of the writing is good on its own, like Deb of Night, Jack, Lily, Malk primogen, maybe Vandal, maybe Jeanette/Therese. The other characters are mostly stereotypical clan members that do stereotypical things (Strauss, LaCroix, Andrei, Ming, Bach, The Giovanni, Garry(?)) or don't go anywhere (Ash, Andrei, The Giovanni, The Bishop, Nines). The serial killer character had potential, but it kinda ends disappointingly "my family won't like it!!!!" or some such crap. VV also had ...attributes. Surprisingly, your character was the one with the most characterization and change.
Not to mention that the entire thing doesn't go anywhere because they rushed it out the door. VtM:B's a good game though and the world needs a new good one (hint, hint Paradox).
EDIT: I'd even say that VtM:R's writing was somewhat better than B's , at least between Anezka and Christoff. It was kinda like a Shakespearean play