Hi Lauren, Earthborn holistic is good food. I'm not sure where you got the info that it is not good, can you provide the link so I can check it out? They might be ranking it lower because of controversial ingredients like canola oil - but this is not proven one way or the other if it is bad or good. The Earthborn Holistic Primitive grain-free option is the best one out of that line in my opinion.
If your bully is doing well with it, I say stick with it.