The fun thing about Snow White is that it's actually not very good! The animation is great of course, and while it's a very important movie for obvious reasons, it feels like a short film stretched far, far too long. Boring and forgettable. Disney obviously was still figuring out how to make a feature length animated film, and they'd succeed with Pinocchio, a vast improvement over their debut feature!
As for the Mario movie, I've already forgotten most of it, which is something it has in common with Snow White. Hopefully Nintendo tries to do something more interesting with their next attempt at a feature!