Answer:
Separating various grains and legumes and then making claims about superiority is a marketing tactic and has little or nothing to do with good cat and dog nutrition. Health is achieved by varying the diet and supplementing with raw cat and dog foods and grocery bought foods as described in the Wysong Optimal Health Program™.

If the nutritional value of the ingredients you mentioned are measured, the opposite of what you have been told is true:

All Values Per 100 g of Food Source