CAESAR AND CLEOPATRA vs. HENRY V
Both films were released in 1945, and it seems to me that there was a subtle competition between Vivien Leigh and her husband Laurence Olivier for movie supremacy, which Larry won. HENRY is considered a cinema classic, while C & C is all but forgotten (notice how few posts there are for this film).
Same thing in 1948: Olivier's Oscar-winning HAMLET versus Leigh's forgotten ANNA KARENINA.
With such clashing egos, their marriage was doomed to failure.