The Barbenheimer phenomenon has occurred before, but the success of it is unprecedented in the history of cinema. The two wildly different movies have both shared incredible success, not as competitors but as a double feature. Christopher Nolan's Oppenheimer is a gritty and contemplative meditation on an individual with one of the most complicated legacies in history. Greta Gerwig's Barbie is a light and fun film endorsing self-actualizing and female empowerment. Yet, the two films both found massive audiences in their theatrical runs.
Source：https://www.cbr.com/studios-learn-barbenheimers-success/
