Thank you for your honest review. Unfortunately, not every product delivers or measures up to our expectations. I recently experienced a very similar situation with Adam's Car Shampoo.
Speaking of which....
Funny thing about this is that I have, but haven't yet tried, the Optimum Car Wash. I have, however, tried Adam's...and was left underwhelmed. The lubrication was disappointing, and it actually left water spots once I was finished. I kept the entire car wet until I was ready to dry it off completely, and I dried it immediately and thoroughly after washing with Adam's....but I experienced more water spots than I ever did with something like Meguiar's Gold Class, for comparison sake. I have heard that Optimum and Adam's are pretty "similar", but I bought the Optimum because Brian from Apex Detail did a car shampoo comparison and he rated the Optimum higher and better than the Adam's. Still, after hearing Eldorado2k's experience with the Optimum, my expectations have now been lowered considerably.