I haven't seen either in person, so I don't judge them too much based on videos, but I would've rather seen The Beauty and the Beast ride in Epcot's France pavilion because it fit the "old world", pre-World War 1 theme of World Showcase. Ratatouille is story created by Pixar, and set in "contemporary" Paris, the original "timeless fairy tale" of Beauty and the Beast is from France, and apart of real French culture, which why the Disney film makes so many references to that, but that's the sort of thing that World Showcase is supposed to be about.
People complain that Frozen doesn't belong in The Norway pavilion because the story is not originally from Norway, but I think the "timeless fairy tale" look of Frozen better fits the Norway pavilion, than the "green wall carpet" queue, and the "off shore oil rig which was stolen from CommuniCore" ending of Maelstrom.
I liked how the original EPCOT Center was "A World of the Future" in the front, and "A World of the Past" in the back. With Ratatouille in the France Pavilion they're abandoning that, and it's basically just a modern version of "Mr. Toad's Wild Ride". To me "screen based" rides are just the new "painted flats" ...I'll always rather see AA figures with a catchy song, then "getting whipped around in the dark" and I'm not real impressed with any of the videos of these "trackless rides", though I've never been on one myself