I don't get it.

Anyway, I think that if a manufacturer wants to cater to the same demographic as Cayman's, there are two parts to the equation: Performance and Design. While most manufacturer can build cars to meet or even exceed the Cayman/Porsche performance, the design consistently misses the mark. There is nothing noteworthy about it. This is true of the Is series as much as it is true of the BMW 335. The design is bland and boring. A Cayman (or 911) stands out in traffic because of the design. So does an Elise. Unfortunately, too many manufacturers are trying to "play it safe",and tone down an aggressive look, etc. The result is a 'common" car that will never be iconic. Even the VW Bug (whose performance leaves a lot to be desired) reaches that status because of its look. Most Italian and British sports cars are readily recognizable solely on the design.
To me, design is as much as a factor as performance. You can stick a 650hp motor in a brick and that won't make it noteworthy, it will just make it a faster brick.

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"Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away"
A. de St Exupery