We are aware of the website you have noted. First, consider the qualifications that any person has who presents themself as the authority to demand pledges upon which people around the world should give credence. Nutrition is a very serious health business. It requires serious study, research, experience, and skills in health, biochemistry, food science/technology, and nutrition.
Wysong does not subscribe to "seals of approval" from self-proclaimed experts using criteria that do not promote health.
Wysong believes the best way to evaluate a pet food can be found at this link: http://www.wysong.net/pet-health-and-nutrition/how-to-choose-a-pet-food-company.php