If Heath Ledger was still alive, the Dark Knight would not be #4 on the imdb top 250. It the millennial version of The Crow. The batman movies are on the same level as the fantastic four adaptations.
If that were true, The Imaginarium of Doctor Parnassus would also be on there, but the movie was underwhelming so it isn’t. Heath Ledger made the Joker into a shockingly realistic character regardless of his death.