The only real difference I notice is the fact that the render had an armor plate on his quads, and the already mentioned scabbard on his side.
The renders looks a bit more majestic for the simple fact that it's angled to show Bruce from a closer and lower angle, while the production picture is taken from a higher angle and further from the statue.
The renders looks a bit more majestic for the simple fact that it's angled to show Bruce from a closer and lower angle, while the production picture is taken from a higher angle and further from the statue.