Dipre, I know you are proud of your work, but the only thing you proved is that Vazquez allows more homers. That is it. I know it requires a bit more advanced logic than I should expect from you, but when you look at his HR/IP, they are incredibly high over his career. When you look at his GO/AO ratio, it is incredibly low. Guys with high GO/AO have higher BAAs but lower OPSA's because they give up more hits, but they are usually singles. Vazquez is an extreme flyball pitcher. Therefore, he allows a lot more homeruns and EBHs based upon the types of pitches he throws. That gets magnified in the stretch. Most starters see a significant increase in their BAA when they go to the stretch. For Burnett or for Lackey, that increase in BAA is more likely to be singles since they are even or groundball type pitchers. But for Vazquez, those have a higher likelihood of being extra base hits.
My point is, that you are trying to use Vazquez vs Lackey and Burnett as a comparison since they have similar career FIPs. The problem is, you are making assumptions off of the FIP that are incorrect since you are not comparing like players.