Rick,
I agree with you. Nothing of value will come from it.
Drivers win races, not cars, it would be nothing more than a test of drivers.
As to what the best Cobra is? The same thing that sets them apart from all other cars - you make it what is best for you. For some it's 800 HP, or razor sharp handling, or the faithful replication of the original, or anything in between.
The "best" Cobra is the one that sits in your garage, or in your imagination waiting to become real.
Of course, it would have to be a small block.