A game with voiced PC will always have less dialogue then one that doesn't. IMO it's unnecessary, and diverts development budget from more important aspects of RPGs. Also 'voiced pc' and 'cinematic' are very much tied together, you can't have 'cinematic' without 'voiced pc' and 'voiced pc' leads to 'cinematic' design.
When did Alvin become Associate Producer of Obsidian Entertainment?
And in the case of an action focused game like Dungeon Siege 3 the amount of dialog isn't that important? We are not speaking about Torment here. Also no. I can turn your argument very much around and say that you CAN have a voiced pc without actually beeing cinematic. Thats a pretty meaningless analogy anyway, sorry. Ever heard of silent films. Are they not "cinematic"?