I think you hit the nail on the head zapata. NBC has to create conflict, to make a "better" show. And you do that with heavy editing. Think back to Big Brother 1, very little editing, and the show usually put you to sleep. Number 2, 3, and 4 are much better because of the "better" editing. I can't even remember at this moment who won Big Brother 1 =P
Anyhow, you just have to skim this board, this thread even, to see that NBC is doing a great job.