You're problem here is one of perspective. Your camera was just to the right of centered vs the scene so you're getting a slightly asymmetrical view of the two sides of the room.
The first thing I notice is barrel distortion, easily correctable in PS Lens Correction. The picture was also taken a bit off center toward the right, so there are some convergence issues. This can be corrected either with Transform or with The perspective option in the Crop tool.