However, it then raises the question of why the render shows the radiators mounted in the front.
Who says they're at the front? Other than thats where the rack ears are mounted it looks like could go either way. In a lot of facilities its now preferable to have all the cabling on one side in any case.
I don't follow. Are you saying that you feel it's plausible that they've designed the unit to have all cabling exiting at the front and simply have the ears in the wrong location?