Bill, you're missing the point in relation to the MR2. Your statement would be accurate if those said cars are making the minimum weight in ITA. The problem being cited is that these cars are unable to make the minimum weight. In this situation, by moving the car to ITB, it would be able to achieve the process weight which then would improve the performance of the car within the class.
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From what I have gathered from reading every post in this thread, no one has gone through the work to make a minimum weight car (reference what Dickita went through to make a minimum RX7).

But, whatever. It doesn't matter. I'm not racing an MR2. But, I will "vote" against DCs.