In terms of GT3, the Ruf RGT is the odd one out, as it is the only one which can be tuned with both NA Tune and Turbo (separately, obviously). The supercharger of the Vantage doesn't come into play in GT3, so if that IS the odd one out, this isn't a GT3 Trivia game, but a car trivia game.
Check over some old threads on this topic, to see how it's done.
Actually, when you go into your garage,if you change the list the aspiration, you see NA and Turbo next to all the cars on the list, but one or two, I think the Jag XKR is the other one has supercharer there instead of turbo/ Even though you buy a turbo in the tune shop.