The jerk has been shown to generate more power than both the clean and the snatch, and is a tremendous movement for developing power through quad-dominant movement.
The power jerk is an awesome move as well, explosive and total body, but splitting the feet takes the movement to the next level. Much of what you do as an athlete revolves around being able to adapt to changing conditions, and changing from a bilateral stance to an offset, semi-unilateral stance trains you to be adaptable.
It also trains your lead leg to be strong in absorbing force. If you have any aspirations of being fast or athletic, this movement is a must for your training program.