The first step in medical science is demonstrating biological plausibility. Simple consideration of the cat's biology suggests that they should not do well at all on a dry diet, even if it's a low-carb high-quality dry diet. It is biologically implausible that a cat will thrive on a dry diet. Therefore dry diets for cats should be rejected until someone publishes a high-quality study of a large group of genetically diverse cats fed dry diets for many years and demonstrates they can do as well as cats fed wet diets on measures such as UTI health and mortality. No one has done that study.
All else equal, cats do better with wet food as all or most of the diet. That doesn't mean they can't do (almost) as well on an all dry diet.