CAL more closely follows df target with slightly attenuated bass than focal, so they should have more energy in treble. And also some more air beause CAL is actually semi closed phones.
focal follows different target and so it has less energy in treble, and it is more linear fr without less dips and peaks, and focal has a sinificantly less distortion in bass area comparing to CAL's big ass distortion which gives warm or loose feeling depending on your point of view.
finally focal is closed phones with outstanding isolation. More isolation = more difficulty in tuninng the sound.
So please guys, stop comparing focal with wide open stax or semi closed with different target response and say 'this destroy focal!' They are all good phones with different uses.
Well stated, I couldn't agree more.