The difference is that in golf you want to take all of the energy stored in the body windup and put as much of it as possible into the club head, with the hope that it will transfer to the ball. You don't want the energy to stay in your body, because you want your body to step before you overbalance past the arriving foot.
In dancing, we have a different situation. We are not trying to launch our shoes at the judges' foreheads. We do not way to send the body's energy into the foot and make it feel 'heavy' with the swing, we want to keep the body's energy in the body, because in dancing the body keeps moving across a series of steps, but the feet start and stop on each step. And the body can't trade much energy back and forth with the feet, because if you watch the motion of the body is perfectly smooth without any abrupt changes when the feet start or stop moving.