The thing with a spoon is that while jigging, there will be moments where there is pull pressure on the line to no pull pressure on the line. With the cheaper power/hyper (barrel/crane) swivels, they will work when there is no pull on the line.
Ball bearing swivels shines best for functions where there is a constant pull pressure on it. Examples like spinnerbaits. This allows the blade to spin in a much more freedom of movement. In effect it does not torque the spinnerbait to turn sideways/angled.
When it comes to cranking spoons at constant pressure, it depends on the effect one is after. A ball bearing swivels will allow the spoon to make a much tighter wobble. While a direct line tie might force the spoon to kick out more, a wider wobble. The effect depends on the spoon type.