Avatar kicked off the whole 3D thing which is certainly influencing the industry regardless of your feelings about it, and more widely than just superhero movies.
Influential is such a hard term to get a grasp on, especially when comparing different movies.
For example, are those silents from the 20s really more influential than The Jazz Singer? It's not just the use of sound itself, the structure of silent films is different than sound films and while it's very rough around the edges and would be refined a lot in the coming 5 years, it set a template to build on. The silents are certainly much better and important and interesting and watchable films, but influential?