We all know that wouldn't have happened either way. At least now the technology exists to do them justice.
You're misremembering the chronology. Gargoyles
premiered in 1994, a year after Jurassic Park
came out, and only a few years after the Teenage Mutant Ninja Turtles
movies and the Dinosaurs
sitcom with their elaborate animatronic lead characters created by the Henson Studios. Any Gargoyles
feature film would've probably come along in '96 or later, at which point the animatronic and CG technology would've been more than up to the challenge of creating convincing Gargoyles.