I did not dismiss Nationals. I simply am stating that National Tours and Regionals/Divisionals carry relevance as well. IMO, more relevance than Nationals. What happens over the course of 7-8 National Tours has a lot more statistical significance than what happens at a single event.
Again, people are sheep. They watch what the "fast guys" do and copy ad naseum, forgetting Murphy's Law and "any given Sunday". Any given car prepped to the rules driven by somebody at least equally as competent has a chance.
Also, just to clarify since you like putting words in my mouth, I did not say the NA would be the best. I said it had potential to win, as well as the 944S2/968 and the GTUs FC RX-7. I think the 911 that's allowed in STR could have a chance too just looking at the paper statistics. 400Lbs (to start) is a damn good advantage, no matter the class. When you're talking 2000-2600Lb cars, that's 15-20% of their total weight!!!
Oh, and on r-comps in Stock, I've said my piece. They ain't stock, and the gigantic popularity of street-tired Stock class cars in Regionals points out that the majority of normal paying SCCA members agree with me. If you wanna play race car, move to a real class. Stock means stock, unless it's NASCAR.