The Tau Devilfish doesn't look right with the burst cannon mounted under the nose of the ship. It looks much better mounted as a turret on the top. It was even modeled that way in the Dawn of War games. Having the burst cannon as a turret gives it 360 degree fire range, it does however loses an inch or two in range.

Is mounting the burst cannon on the top, as a turret modeling for an unfair advantage?