Somewhat similar. But the BB row will call upon the lower back and ham's more than the sitting position of a cable row will. Keeping the stability of the body during the bentover row depends greatly on the lower back/glutes and hams. To a lesser degree, the abs. You are also fighting gravity throughout the exercise. You can get a better stretch with the cable row, if that's what you want.
For any complete BB'ing lat/back workout you might include an over head pulling motion (chin, pulldown, etc) as well as an extension motion (pullovers, lat machine front pulldown, etc). The BB row is a pull starting from the front of the body to the body. These can handle the main functions of the lat's/back in one workout, if grouped together.
Example:
Chins..overhead pulldown
BB row..front of body to body
Straight arm pullover..extension motion
These three movements in one workout can work the lat's/back very well. Good luck.
side bar: is a clip of Alexxx taking a dump really needed?