I dunno. In my experience, the JP dubs miss by the largest marks.
One of the best known anime characters of all time, who is the strongest mortal in his universe, sounds like a 6 year old.
Goes back to the native ear, really.
It's why -- at least at one point in history, maybe not as much now -- you shouldn't buy Japanese stereo equipment to listen to heavy Western music, because it was designed for the Japanese ear/sound/music and couldn't carry the low end as well.