As expected, Star Wars tech != real world tech. For comparison, about ten years ago a different GWTMTOHH* built a 1/12th scale model of a Saturn V, complete with liquid fuel and gimbaled motors. Flew like a champ.
Of course, as has been pointed out elsewhere, the X-wing is supposedly a space craft, not an aircraft. Rules are different, that sort of thing.
All I can say is it was most likely much more fun for me to watch than it was for the guys who built it.