Leaving the whole dog park thing out of it (as I neither agree with, nor attend them), the statements you have made above, are a gross generalization. Just because a breed CAN have a tendency to be DA in certain instances, does not mean they eventually, invariably WILL be. ANY breed CAN be DA. And the multitudes of people on this site with DA dogs of all breeds and sizes are an example of that. That's like saying that Great Danes are a "stupid" breed. You cannot generalize all members of a breed based on the actions of a percentage. I have owned Pitties (still do) and been around countless others - never was one DA. I'm not saying they can't be; I'm just saying to insinuate they're automatically more apt to be than any other dog, is unfair, and untrue. If it's bred from fighting lines, raised improperly, or lacks training, fine, maybe, but barring that . . .
Saying that Pit Bull owners "sugar-coat it, or gloss over the topic"? What topic would that be? That their dog, because some in the news or some with ****ty owners have, is more likely to hate on, "bully" or attack another dog? That's crap. Why should I walk around issuing a catchall public service announcement about DA Pit Bulls, when mine isn't one? Just so that I don't get accused of "sugar-coating" anything? Nope. Sorry. I'm not going to contribute to the stigma against my dog just to make uneducated, bigoted and media-led people feel better about it.
"Too many owners think their "pit bull" is just like any other dog." Pit Bull's ARE a dog. And should be seen as such; not automatically assumed to be thugs just because of their breed. A dog, is a dog. Like I said, barring poor breeding, mistreatment, or lack of training, I urge you to find me a Pit Bull (or any other dog) that doesn't act like, well, a DOG. Should we say Rotties are inherently DA, because they can be? Or that GSDs are more likely to attack a person, because for so many years they have assisted law inforcement, in having been trained to?
As for your theory of Pits not backing down from a fight, or whatever you were getting at? I own a Pit Bull who has been ATTACKED, not challenged, but ATTACKED, by multiple dogs over the years. More often than not, by smaller breeds in fact. Not once did he retaliate, snap, fight back, or attack. Not once did he abandon his TRAINED BOUNDARIES that prohibit aggression, and not once did he "all of a sudden" go from being a sweet dog, to a DA one.
ANY dog is capable of being DA, and until people stop focusing on breed as a determining factor, crap like BSL and breed-profiling will never stop.