The failure of “U.S. Marshals” to catch “Titanic” at the box office has many of us asking the same question: How does one dethrone the biggest moneymaker of all time? Make a bigger movie?Well, “Godzilla” doesn’t open until May, and we’ve still got well over a year until the first episode of the new “Star Wars” trilogy hits theaters, so that’s a no-go. But in the meantime, United Artists seems to have the right idea; they’re fighting fire with fire this weekend with an all-new Leonardo DiCaprio vehicle, “The Man in the Iron Mask.”Adapted from Alexandre Dumas’ classic Three Musketeers adventure, “The Man in the Iron Mask” tells the story of Phillippe (DiCaprio), a young prisoner forced to conceal his identity with an iron mask, and his evil twin brother, King Louis XIV (DiCaprio again). Broken by Louis’ inexplicable tyranny, France is on the verge of social upheaval when the aged musketeers Athos (John Malkovich), Porthos (Gerard Depardieu), Aramis (Jeremy Irons) and Musketeer Captain d’Artagnan (Gabriel Byrne) launch an elaborate plan to restore order to their homeland by replacing the villainous king with his iron-clad brother.While “The Man in the Iron Mask” remains faithful to the swashbuckling action we’ve all come to expect from the most famous trio to ever grace a candy bar wrapper, screenwriter Randall Wallace’s (“Braveheart”) directorial debut becomes muddled by a somewhat incongruous mix of self-indulgent morality and antiquated chivalry that may not play well with today’s carnage-hungry audiences. As a result, instances of 17th century valor inevitably fall victim to the skepticism that typifies 20th century interpretations of what it means to be heroic, and the film skates dangerously close to self-parody in the process.Though his direction may not be top-notch, Wallace is blessed by the presence of A-list actors that rival even Quentin Tarantino’s best ensemble casts. No matter how disconcerting it is to see seasoned pros like Malkovich and Irons play second-fiddle to DiCaprio’s top-billed dual role, “The Man in the Iron Mask” gains momentum through the comedic stylings of Depardieu’s Porthos, as well as Byrne’s portrayal of d’Artagnan as a man torn by loyalty not only to his country but also to his comrades in arms.Hard to put a finger on, “The Man in the Iron Mask” is a motion picture rarity that satisfies as much as it disappoints. Devoid of the graphic violence that defined his “Braveheart” screenplay, Wallace’s shaky take on the Three Musketeers poses yet another important question to those of us ready to see “Titanic” overthrown: is the glass half empty or half full?