The "190A vs 190D" thread was based on a serie of online tests in DA between these planes and some others. Acceleration (at lo level), roll rate, and elevator authority were all tested for these planes.
The result was that A series roll noticeabily better than D9 at any speed, they also have much better elevator authority at hi speeds. Typhoon and SpitIX surpassed all of them (A and D) by a very wide margin in elevator control at hi speed. Nor typh neither spit needed trim adjustements to exit a 8k vertical dive. In that dive, repeated several times, D9, La7 and G10 kept augerin in the sea over and over. Anther tested factor was the sensibility to trims, all 190s demostrated to be very sensible to trim adjustments while, in real world, they only needed a +-5 degree elevator trim control.
As a matter of fact, these tests derived in two threads, "190A vs 190D" and "190D elev auth".
There was no demostration justifying the advantage in roll rate of A series over D9, nor about the lack of elevator control above 350mph.
And yes, HTC kept radio silence.