I don't like the barbell bent over row for one reason: your lower back strength limits the exercise. Often people's lower backs will fatigue before their upper back and shoulder extensors fatigue, so they have to 1.) stop the exercise, or 2.) continue with a rounded back. The consequences are, respectively, 1.) you can't fully stimulate your upper back and shoulder extensors and 2.) you set yourself up for injury.
Due to those reason, I choose the unilateral bent over row with a dumb bell. You can post your knee and arm on a bench, and these struts help to passively support your spine through joint centration (basically, your bones are placed against each other in a balanced fashion so that you can load up your shoulder and hip instead of your spine). This way your upper back muscles will be able to be stimulated to their potential before your lower back checks out. Of course your lower back will still be working, but not nearly as much.
Also, people usually hammer their lower backs when they train lower body, and it is isn't allowed to recover if you are hammering it again on upper days with bent over barbell rows.
Beyond all of this, I don't think there is any uniquely beneficial about the barbell bent over row. You can get every thing from DB rowing, and then some.