A house furnished and staged for sale always looks better than the same house empty.
It's so much easier for the buyer to imagine living in the house when it's been staged.
Actually as a buyer I'm happy when I see a empty house as I expect less competition to get it
At the end of the day though I believe that the market decides of the price of a house. So if it hasn't sold then its too expensive.
Sellers usually believe their houses are worth more than what they are, it's human nature.
Did he get any offer/interest at all?