Because the article doesn't say, the American box office numbers for the week of Memorial Day 1995 (unadjusted):
Casper - $25,511,615 (opening week)
Die Hard with a Vengeance - $22,492,166 (-24.7% week over week)
Braveheart - $15,571,948 (+489.3% week over week)
Crimson Tide - $15,116,928 (-3.1% week over week)
Forget Paris - $8,974,170 - (+13.9 week over week)
(Sixth place was the premier of Johnny Mnemonic at only 8.9 million.)
Keanu Reeve, Bruce Willis, Denzel Washington, and Mel Gibson all got beat by Bill Pullman!
I remember seeing Casper in the theaters with my family, and it's entirely possible it was over Memorial Day weekend. Which means I might be partially responsible for this. 🙃