Strong presales for both *Avengers: Doomsday* and *Dune: Part Three*, already tracking toward a combined domestic opening near $350 million, underpin the 97.3% market-implied odds that Dunesday will surpass Barbenheimer’s 2023 record. *Doomsday* benefits from Robert Downey Jr.’s return as Doctor Doom and MCU event status, while *Dune: Part Three* dominates premium large-format screens, including IMAX 70mm, driving early ticket momentum and franchise highs. The December 18 collision revives the dual-release cultural moment with comparable scale and star wattage, though both films target overlapping audiences. Key swing factors include final tracking updates, review reception, and any release shifts, but current data and historical blockbuster patterns support the strong trader consensus.