Lionking... Cinderella,,, Beauty and the beast... All the classic animated movies aren't only for kids. They were made for adults to, they just made them in such a way that a kid wouldn't pick some of the things in the movie up. Sides, if you want something like that, go check out all the anime available. There has to be a movie that fits. If nothing else, there's series.
Possible for a kid to watch doesn't mean its not aimed at adults. As for your 4 criteria?
1. Are completely realistic in plot and look,
2. Include swearing where appropriate,
3. Don't sound like a kids' movie when you describe the plot.
4. Aren't comedies.
Number one cant be passed by any move. EVER. Even documentaries fail on this point as you for one, gut out massive amounts of information we need to make it realistic. Not to mention Halo effects and the like.
Number two? Swearing is never appropriate. Even if it is, you have to mind the global market where some words will get you in big trouble.
Number three. Define kid's movie first. No matter what criteria you use you can always abstract any movie to fail this criteria.
Number four. Everything is funny to someone, thus everything is a comedy.