This doesn't necessarily tell you how they would perform under lower CFM needs, would it? Could it be that when the Nexus is @ 7V, and airflow amongst all fans is held constant, that the Nexus then becomes the most quiet? Or, are you suggesting that this new fan becomes the best choice for 92mm fans?
Last question first: I present some data, carefully taken on samples of commercial (in this case 92mm 3-pin) fans. I have not tested other samples, nor all fan makes and models, nor have I tested at all RPMs or under different backpressure. There isn't time and money enough in the world to do all those things. If the limited data I present is of use to you, good. If not, ignore it.
Note that I'm measuring noise at 1/4", not at one meter, to get up out of the ambient noise mud. At a CFM equal to the Nexus at 7V, I'd be at about 30dBA even at 1/4" and the noise data would be useless.
So, answering your first question, the answer is no. I don't know where you could get the comprehensive data you want anywhere in the world. If you find it, please alert the rest of us to the info. I'd like to have it myself.