Arnold Panz
Model Sig 304, VIN 542
My explanation is that the capable range of both is the same because the perf model just ups the "available" HP and torque. If you drive it to draw upon that incremental power, then yes the range will be less, all other things being equal. But if you drive the perf and non-perf exactly the same, then the difference in range will be negligible since they have the same size battery. Similarly, you can't expect to get 265 miles from either if you drive them at full "throttle" constantly.
Right, that makes sense to me (now), and there was a fair amount of discussion on these boards about this after the announcement of the performance model, which even got through to a Luddite like me. My point was just that for the Edmunds reporter, who is writing this for someone who knows nothing about Tesla, Model S etc., that's an obvious question that begs an explanation, and I think it was smart of him to both raise the issue and provide an "explanation" (through JB) without being able to verify anything that JB (or Tesla) was saying about the actual range of the Performance v. regular 85 kWh car.
My only quibbles with his review were the negative comments on the looks and the use of MB parts without providing Tesla's logical explanations for both. But that's a minor quibble, and sometimes a tougher review like this, with some negatives, can be more impactful than a glowing review that looks like it's written by a fanboy.