20 contestants! That must have been absolute bedlam at the start - it was bad enough trying to keep up with 12 contestants in BB3!
What would have happened if BB2 had been on for 4 months? I don't know . . . you can have too much of a good thing, after all. Perhaps we would have got bored???? (I doubt that very much).
All I can say is that I would much rather watch the BB2 contestants for 4 months than watch the BB3 contestants for 4 weeks!