Thanks for the clarification. It helps to have a more detailed analysis of what makes a car "tougher" than just offhanded comments.
I do understand that as far as the average Joe is concerned, setup and driver skill has more of an impact on how you perform than if you have the newest car or a certain brand. However, things like the likelihood of breakage for your average driver does make a difference. So in some cases, "all these cars will perform the same" breaks down a little bit depending on your driving style and ability to stay off of the walls.
Losi XXX-T CR * Traxxas Revo Tekno Brushless Conversion * Losi 8ight 2.0 * Losi 8ight-E 2.0 * Corally RDX * HPI Blitz * Tamiya F104 V2 Pro * Associated TC 6.2