Degree of left hand touch isn't just a matter of just fret size or height. String gauge factors in, too.
If your primary, go-to guitar is strung 'super-slinky' with 8's or 9's and thinner, lower vintage frets, you tend to touch and attack lightly for speed. Move to a guitar strung with 10-46's or heavier and jumbo, fatter, higher frets, you may at first tend to squeeze harder and attack harder with your picking hand and you could squeeze it out of tune.
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