We generally all agree that Sam and Amanda are nice respectable girls and have done well to last the full term in the BB house, but what if Sam and Amanda were not twins and only ONE of them was in the house?
Say Sam was the housemate? Do you think she would have made the final six on her own merits? Same question goes for Amanda? - Forget they are twins remember just think about each person as a singular human being.
Normally the nice housemates make it to the last weeks but go out early on final night and tend not to win. Is the only reason they are favourite to win because they are twins?