psford.....To answer your question, I would say a low cost, lower build quality, but get the job done hitch. It is often the one the dealer throws in to close the sale.
My first FW hitch was entry level, low cost, noisy, but functional. It was a slide bar, worked quite well when new. As the bar wore, it got kind of sloppy, but still very dependable.
I am not knocking the Curt, it is a good price, probably a better hitch than most entry level. However, when looking at Learjets excellent pics, it is easy to see the quality difference, comparing to his B&W.
Jerry