As mentioned earlier, this poster was clearly designed as a parody of Danny Boyle’s movie Steve Jobs – right down to the turtleneck that Simon Williams is wearing – but the sad thing is that one very important detail is clearly missing: Tony’s famous goatee/pencil beard.
Maybe the film primarily focuses on a specific period in Stark’s life when he was staying clean shaven?
The director says in his post that he still considers the Nathan Fillion/Simon Williams movie posters to be canon within the Marvel Cinematic Universe, so that means that there is an actual Tony Stark biopic that exists within the franchise (and it apparently also co-stars actors Mary Livanos, Sean Becker, and Dexter Mills).