I know they are a separate company now. Why do they use it, Well they are sponsors, They get the food for free or cheap that is why, It is all about money. My Female Rottweiler is a Show dog, Trust me not all people that show there dog's really care about the dog. Once the dog is done winning a lot of times that dog is gone.
Raw is the way to go for dog feeding, and yes there are better dog foods that cost more money, you get what you pay for, Not saying you should spend $100.00 on a 40 or 50 LB pound bag of dog food either.
I Feed Innova or TOTW when I am feeding Kibble.