It's a good concept that is poorly Photoshopped. The curse of Photoshop is that an image can never just be what it is anymore...all surfaces have to have "realistic" textures; all people have to be photographs rather than artwork; shadows are added regardless of lighting because what the hell, they're easy enough to create. The effect is that everything just looks fake and poorly composited.
In this poster, for example, the stonework and brickwork from the wall to the ground is overwhelming, the lighting of the man doesn't match the rest of the poster, and the shadow is entirely unconvincing. Could have been more fresh and effective as simple, graphic, 2-D artwork. But oh well.
"If there is going to be a restoration fee, there should also be a Renaissance fee, a Middle Ages fee and a Dark Ages fee. Someone must have men in the back room making up names, euphemisms for profit."
(Emanuel Azenberg)