One of mine had an allergic reaction to the RC YT as well. It actually landed us with a vet visit in the middle of the night.
I have actually heard of many people who have made the same claims as far as the itching. It made two of the other family Yorkies throw up every time they ate it.
As far as the website you mentioned, keep in mind the 'analysis' is only based on educated guesses and opionions of the site editors. IMO, you shouldn't use it alone to select your dog's diet. Choose a food that best fits your dog and make sure to supplement the diet as needed. Look into the option of supplementing home cooked foods to provide the needed nutrients not provided by kibble alone.
