FWIW, I didn't take it as too personal, just a bit snippy.
Bill did you not use your eyes to make the charts?
So here is the direct honest answer, not intended to appear "defensive".
No I did not use my eyes to make the charts! (This implies I judged something with my eyes.) A sightless person could do it. The charts are generated automatically using data that was gathered statistically by a computer program that is fed NEF files.
If I hook a "stereo" up to some equipment to measure it's power that doesn't mean I shouldn't also listen to it but it also doesn't devalue the objective measurement of the equipment. (At least in my opinion.)