At what loss of contrast (MTF)? Measured in what way: slanted edge or something else? If so, how slanted is the slanted edge? Demosaiced or not? At what channel (color)? Vertical, horizontal resolution, or something else?
DXO used to publish much more "diversified" data. The numbers/curves depended a lot on the color, for example, not to mention on the MTF value.
I think MTF 50 is fairly standard. As to what color channel, the final demosaiced RGB image of a black and white subject is fine. Color artifacts from demosaicing affects contrast, so that is taken into account.
I think you are WAY over thinking what I was asking. I will rephrase. "Asking semi-rhetorically, I wonder what megapixel class of bayer filter camera this new camera will compare to in terms of line pairs per millimeter at MTF 50. 30-ish? 40-ish? 50-ish?"
Until recently, DXO considered MTF 10 to be "the standard", measured on the G channel, at 5 degrees slope, not demosaiced. So you see that their definition of what was standard differed a lot from yours. As a result, there was very clear jump in resolution, from, say 12m to 15mp, then to 18mp, same lens. Then they decided to change the metric. Now, a 36mp sensor does not look that different from a 21/22mp one. The new (secret) metric seems to emphasize more higher MTF values, and might react differently to, say, aliasing; or the angle.
I am afraid that you are the one oversimplifying it.