New York Times Review of Wallace and Gromit: "To keep matters within the DreamWorks menagerie, you might compare Gromit to Shrek, who has the genetic advantages of Mike Myers's Scots burr, a bevy of celebrity-voiced sidekicks and rivals, and state-of-the-art computer-animation technology. Good for him. But Gromit, made by hand and animated by a painstaking stop-motion process, has something Shrek will never acquire in a hundred sequels: a soul."
Well, yes. And I would think that would be perfectly obvious to anyone. But perhaps it's more to do with the people behind both characters, rather than something inherently superior about play-doh compared to CGI.