And you also got to understand that the difference .15 sec isn't earth shattering and could go either way depending on set variables. Now if the difference was actually even somewhat substantial (1+ sec) it would be a different story but a tenth of a second could go either way. Also this
is just one (1) track. It would be far more informative too see results far several varying courses. But of course none of that is relavent unless ALL variables are the same for all cars. Variables such as the driver, course conditions, outside temps and so on.
Not that one car being a click or two quicker around "x" track really matters much to people who aren't racing their daily drivers for a living (I don't know any) I would think a great car would be more about the experience behind the wheel, practicality, and other aspects that really matter.