They rate those cheap throw-away jacks the same way they rate the horsepower on cheap throw-away air compressors.
I have had one of the older Craftsman jacks for more than 25 years. I've used other jacks that other guys had and never thought there was much difference. I managed to get a Walker a couple of years ago and have been able to compare them side by side.
They both will lift a car or truck with the same amount of ease.
There are two features that make the Walker better. They both have roughly the same size lifting pad, but the Walker is square, giving a slightly wider reach. The Walker pad drops down slightly below the level of the wheels whereas the Craftsman is well above them. This can be very useful, getting under something that's very low or pulling a engine or transmission out from under a car.
The other thing is how well the Walker rolls. I don't mean just across the concrete, which is nice too. The jack pad, when you raise it up high, swings in an arc toward you. That means the jack has to roll under the car and the Walker does that with much more ease.
