I think
@GreyLord already contrasted
quality and
popularity. Hollywood studios have sophisticated techniques, I believe, for determining audience reactions and making sure that the films they release will be popular. That doesn't mean that (say) the latest Star Wars film is better than the first one, or that (say) any detective film made in the past decade is better than The Maltese Falcon.
There is no empirical proof that Classic Traveller or Prince Valiant are weaker systems - in design, in function, in play - than 5e D&D. For what it's worth, I'd pretty confidently assert that each is better!