Yeah, because other directors don't use art departments for storyboards and costumes, writers for scripts, directors of cinematography to do the actual shooting, etc.
The directors job is to bring it all together and make it work. He is a colonel, not one man trying to do the work of every grunt.
I give Zach a lot of credit for giving these stories his own twist while staying true to the basics and to the cannon. Considering that we are entering a spiral of remakes, sequels and reboots, it is refreshing to see a director that wants to tell a story in cinema while not pissing away 30 year of back story.
Take for instance the travesty that is coming out in a few months that will be Star Trek. JJ Abrams has taken an entire universe of storylines, style, characters, and even an actual universe and COMPLETELY threw it out the window and did whatever the fuck he felt like.
Have you seen the trailers? Huge colorful explosions with massive space battles where everyone including the bad guy is a sexy teen. I mean they even have a Space Base Jumping scene. A FUCKING SPACE BASE JUMPING SCENE.
I don't know if JJ has even ever seen a Star Trek episode based on what I have seen so far. It isn't a wham bam space action flick. It is a story about discover, exploration, strategy and most importantly the human element in "alien" environment. It isn't an overblown dawson's creek with explosions in space.