With all the bickering going on I think the first step to solving all these childish arguements is to have owners of all vehicles whether it be Lexus, BMW, Mercedes-Benz or Audi accept the fact that the competition is indeed better than their favorite brand in certain categories.
I'm glad to see BMW fans accept the fact that when it comes to interior design they are simply not as good as Audi.
I'm glad to see Audi fans accept the fact that when it comes to driver feedback, feel and purity of driving experience even the RS4 can't match the M3. For that matter none of the Audi models can match their respective BMW counterparts for performance as a whole (including steering feel, handling, braking, acceleration, etc..)
Mercedes owners know that their quality has suffered but Mercedes still does what it has always done best and that is create luxury gt cruisers with immensely powerful engines with the AMG line and the ability to make mince meat out of the competition in straight line acceleration. Of course, we know you don't get a Mercedes for a track because a BMW or a Porsche or even an Audi for that matter will wipe the floor with even Mercedes' most powerful 65 AMG models when it comes to track times. In straight-line acceleration Mercedes still wins albeit, it is one of the most uninvolving thrusts you will ever experience.
It is high time for us all to accept that we can't be the best at everything...only some things.