Bud: You are correct. There are some slight differences in adjustability in suspension. I agree its spliting hairs and the differences are so slight they are really no differences. My tank is also 18 gallons which I opted for. I just wasn't comfortable riding around with 42 gallons of fuel behind my butt.
Why are we talking pure bred dogs, horses etc???
They really don't, at least from a "performance" standpoint translate to an analogy with cars.
Pure bred horses, espeically in racing circles usually DO historically and statisically perform better than horses of lesser stock. Breeding is all important and many times considered when formulating odds.
A pure bred JBL will probably outperform a pure bred Shelby. So what? We are talking apples and oranges again. But as great as a JBL is the more prized pedigree will be that of the Shelby. Its just what it is. Nothing to do with performance.
Therefore, if we are NOT talking pure bred = performance as it applies to cars then I agree with BO's analogy.