I think he meant that the quality of the leather in the Cadillac isn't quite up to the standards of the leather in a Mercedes, BMW, or Jaguar. Part of this might be tactile, as it doesn't quite feel the same, but part of it might be a matter of smell. The new car smell in some luxury cars is mostly the smell of the leather, and at one time, the smell of Jaguar leather could be considered akin to that of a English riding saddle. As a personal opinion, a few things could be simplified in the CT6 interior, and it would be for the better. The leather around the CUE touch screen could match the surrounding part of the interior, or be deleted entirely. Does the strips of wood on the dash need to be accompanied by strips of carbon fiber? I also wouldn't mind if, for the 70K or so of the CT6 3.6 Luxury I drove yesterday didn't have the same cloth headliner of my 2016 Chevrolet SS, meaning the same material that Jason Cammisa described as scratchy, while otherwise participating in an ode to that car. Does Alcantara really cost that much?
That said, I like the CT6, may try out the Platinum later, though it might be academic. I liked that the ride didn't even try to beat me up in sport mode, that, unlike my SS's myLink system, the CT6 system indexed my iPod Classic 80GB practically instantly, allowing me to divert from the first thing it could play to Chris Isaak's Silvertone album quickly. Considering how I like music while driving, that's actually very important to me. The steering was sharper than I recall in drives of a W221 S-Class or the previous gen 7 Series. It was, though, an admittedly brief test drive, though.