I don't make the rules but the name of the game is recognition and popularity. The GN is worth more for those reasons. I'd like to have a silver T but I know that it'd be worth less than my GN so the GN stays despite the continuous polishing. However cars are apples and oranges. Hardly many in the same crowd are just alike (condition, options, etc). It's difficult to compare cars other than in broad sweeping terms.