Originally Posted by
mknight
You completely missed Matton's point, that I am trying to emphasize with examples.
The car is fast when the setup is perfect for the conditions, something that is easy to do for test or a stable conditions/road rally = Corsica.
Whole day at monte is not stable conditions with some ice bits here and there => bad performance. Testing for Monte is stable conditions (same road, memorized by drivers), even with some minor weather changes => good looking test and feedback.
The problem clearly was at that point, the "sensitivity" of the car itself was not revealed by the tests. (without speculating who's fault that is, you can blame anyone depending on your angle, designers for design choices, drivers for feedback, people setting up the tests... team management for not getting other test drivers etc etc.)