That actually was briefly true as I recall. It was an early sign of the problems of "preorder culture" in games (a lesson we're still relearning/refighting time-and-again today): KQ8 was a preorder darling with a ton of hype and anticipation. Grim Fandango was a sleeper that "no one" thought to preorder and the preorder shops (for their reasons) weren't pushing. Grim Fandango was considered a "flop" for a bunch of years, though obviously it's done far better in the long tail of post-preorder sales than KQ8.