I dunno if I can agree with the "exact same […] but […] much more fluid/better". I think the motion comics came about because some comic exec though they needed to put their wares on Youtube or something like that, whereas I started with faux-3D/parallax as a neat way to show a lot of information in a limited space. My inspiration is pop-up books, theirs is movies/storyboards.
I don't think you can compare them qualitatively as directly as you've done is what I am saying. Their end product is a movie, mine is a website.