That bar doesn't pull, it maintains the end that is bolted to the front axle a fixed distance from the driver side frame. That's all that it needs to do. While steel isn't a particularly good material in compression, it's strong enough in this application. So it pushes, too. At the limits of travel, the axle moves slightly right or left, but not enough that you can't easily adjust with your steering wheel.
Add the control arms controlling front and rear location, and tilt ,the suspension in our Comanches and Cherokees is fairly simple, robust and effective.