The Grand Duel (Italian: "Il Grande duello"), also known as Storm Rider and The Big Showdown, is a 1972 Spaghetti Western film directed by Giancarlo Santi, who had previously worked as Sergio Leone's assistant director on "The Good, the Bad and the Ugly" and "Once Upon a Time in the West". The film stars Lee Van Cleef as a sheriff who seeks justice for a man accused of murder.

Based on that paragraph can we conclude that this sentence is true?
The Grand Duel was very popular when it was released in 1972.
It's impossible to say