Pleasantness of color is not a property of the sensor. The undeveloped RAW image does not have any colors. It's all data. Colors exist in the mind. What may be a pleasant color to you might not be to someone else. Getting pleasant colors is presumably what you try to do when you convert your RAW file and do postprocessing in Photoshop. If you want very accurate colors, then it's usually necessary to calibrate your camera.
Colors exist in the mind?
So what? Anything that exists in the real world exists also in the mind, expressed in the mind's way to comprehend, understand, and categorize things, putting them into relations to other phenomena.
So what you say is without any sense.
Or did you intend to say "color exists (only) in the mind"?
That would be less than having said something bearing no sense. It would be wrong.
Of course, color is what we call a certain sensation, when reflected light of a certain wave length hits our retina. Depending on that wave length we can see it in different colors, or, like infra red, we can't see it at all.
The same goes for a sensor. Instead of a retina being connected to a brain, it is connected to a computer chip and records the light data in zeros and ones.
If there would not be a strong correlation between light of a certain wave length hitting the sensor and its being categorized/interpreted as a certain color, color photography, and especially color management would be impossible.
Of course, sensors can be built with different sensibilities, just as lenses can be built sharp or cheap.
I do not have the impression that DxoSensor does any in depth analysis how color is seen by a sensor.
PS: it is also wrong to say a RAW file doesn't contain any color, just data.
It's data about color, even though easy to edit. Any RAW file will tell you what color a person's face is or what a color a car has. You just have to process it, knowing from which camera it came, so you can interpret the data about color, and you know what color it is. That's a part of color management.
Data, that cannot be linked to something tangible or concrete, is worthless.
In the same vein you could say that there's no music on a CD, just data.