As much as I hate to say it, 'tis true. Now Amsoil's Engine Flush is a good product and one of only a handful of such products that doesnt contain Kerosene, but its not really targeted to do the work that Auto RX does. Look at it like this.
You go to the bathroom and wash your hands (hopefully) after all is done. Thats Amsoils Engine Flush. A surgeon litterally scrubs his hands before surgery. Thats Auto RX.