OGM NOOOOOO. I have explained that, and Boris has shown you the graph.
Stop with wishful thinking, any curve will give you the same result because it’s constrained in 3 points and display peak white is 100% while diffuse reflective white is 92%. 8% is 0.12 EV for specular highlights and emissive stuff.
No bloody global mapping, no curve, no one-size-fits-all method will give you that.
USE LOCAL TONE MAPPING.