You are not an inferior calibre wet shaver if you find Williams to be below average. Also, you are not an inferior wet shaver if you find Williams to be an acceptable product.
I'll let you all in on a little secret... there is no magical, mystery technique that will make Williams "work for you". It is a below average soap that some people like and there is nothing wrong with that. If you find it not to your liking there really is nothing you can do to change that. You could draw a pint of holy water from the baptistry of St. Peters basilica on Easter morning of leap year during a full moon in a hand forged golden chalice made by the monks of Santa Maria Novella and soak a brand new puck of Williams in it for forty days and forty nights and you will simply end up with holy bubbles.
I have made mounds and mounds of bubbly Williams lather in my time and it simply is not satisfying to me. There is no doubt that it is extremely slick, but there is more to a good shaving soap than slickness. Beard softening and moisturizing are also important attributes, which Williams does not offer me.
So there you have it. You don't need to feel like less of a shaver if Williams isn't for you. There is no secret code to unlock what isn't there.
That's how I feel about the fat.