>>149302570
>>149302624
It's not just the pacing of the panels, it's the entire thought process around drawing and panelling as a whole that's wrong in comics.
Your Prince Valiant comic is a good example of how many comics are drawn still today (atleast in essence)
The drawings aren't actually keyframes in any motion, but instead are "symbols" of the story taking place. They're abstracted from reality, they carry no true motion in them and no real sense of time.

Manga on the other hand are rooted in animation, every panel is a keyframe in an animation, can every panel can be easily converted to a TV storyboard.
This gives it a sense of life that comics never have.