Strong presales and franchise momentum are powering trader consensus that the combined Dunesday opening weekend of Avengers: Doomsday and Dune: Part Three will surpass Barbenheimer’s roughly $310 million domestic benchmark. Both December 18 tentpoles benefit from holiday timing, massive marketing campaigns, and proven audience draw—Avengers as a multiverse capstone and Dune as the trilogy finale—with early IMAX sellouts and site crashes signaling record demand. Historical precedent for event-level superhero and sci-fi releases further supports the market-implied 97.4% probability. Realistic upset scenarios remain limited but include unexpectedly poor reviews dampening word-of-mouth, unforeseen screen allocation disputes, or broader economic softness curbing attendance.