BYU has been abysmal against Utah the last 10 years and none of the QB's has registered anything close to a great game against them. I get the point you're trying to make, that Zach has been better than most of whatever else we've had over these last several years but that doesn't make it all that great. I don't think going from terrible to mediocre is what most of us really want.
I think some of your points about Zach are important to consider, I've made some of the same ones, but at the same time what we've seen so far is absolutely not good enough, it simply isn't. There is reason to be concerned and also plenty of reason to doubt plus plenty of reason to think that both Hall and Romney might actually be better. No that is not proven at this point either but nothing Zach has done thus far really puts him above either of those guys.