How many other directors can you say make films that has storytelling going both backwards & forwards, films where you are viewing both protagonists and antagonists (or which ever) perspective from the other perspective's diary, films where you have four simultaneous dreams told all at the same time seamlessly, and able to transform a comic book into something realistic? Not to mention tell one of the ambitious science fiction cinematic experience since 2001? All of this while being grossly commercially successful?
Not too many can make that claim outside of Spielberg himself.