User blog comment:ImperiexSeed/Supernatural Mysteries/@comment-6449959-20130328040758/@comment-5767263-20130328064554

Yes, by "creation" is a very non-specific term. Creation of what? The universe? Heaven? Earth? Humanity? Cats? All we can derive unequivocally from Cas' statement (who, mind you, was insane at the time) is that Metatron is really, really old, but of course, we didn't really need a nutty fallen angel to tell us that.