Yeah… that doesn’t seem like a reliable site. According to the FAQ the owner just reads the labels and assigns a rating based on their own undocumented scoring system. They also have no particular qualifications for the work they’re doing and make several clerical errors due to their own bias. For example, they don’t count anything listed only as “protein” as protein because they don’t trust the manufacturer not to lie on the label. Given that this site gets literally all of their information from the manufacturer’s label, I’m sure you see why that’s a problem. Their information is also just plain wrong on some accounts, such as labeling Royal Canin as “significantly lower carbs than average” while most experts agree the opposite is true. The reason they get these wrong is due to a flawed methodology. They basically add up the percentages on the labels and classify whatever is left however they want.

For the record, I don’t feed my cat Royal Canin (due to the above reason), I was only commenting on the smell. Nevertheless, I would advise everyone to steer away from that site.