That's clever... compare the Shelby GT500 to the others. Now then, take the extra money that costs, and buy a supercharger, exhaust, intake, hot cam, upgraded fuel injectors etc, stick them on the Chevy or Dodge, and THEN see what happens. Ford never updated any Mustangs from the low tech live rear axle yet have they? Don't get me wrong, I love Mustangs too. But let's be fair here.
This is about marketing....fairness was run over and left for dead a long time ago. How else are you going to justify a sticker price of $54,200 on the Shelby?