It's kinda funny...
We have an expert on the subject saying that at a certain point, too much is not better.
We have real-world results that too much is not better.
I say again, just because the rotor gets larger...that doesn't mean the car will go faster in a car, on a track. Even when geared up, it's not going to have the RPM range. If that's a still a problem for a couple of you...I don't really know what to say.
Life is about trade-offs. I like how mine feels and I can deal with having less big-end for the better infield driving. Is my car "more powerful" now or with the 12.3mm rotor?