When I started feeding TOTW pacific stream, I have tried the other two formula's as well. The past two time's I bought the wetlands formula. After checking out dog food analysis, I saw that wetlands and high prairie are under 6 star but pacific stream was not listed. Does this mean it is lower quality and why? I did notice that pacific stream has a lower protein content, whereas High prairie is the highest, where wetlands is in the middle. What is the differences and what do you use?