Preview:‘Wicked’ has proved to be a record-breaking opening for a musical.‘Gladiator II’ was also successful.The box office total was up compared to last year.Studios and theater owners had something to be very thankful for this weekend, as both ‘Gladiator II’ and ‘Wicked’ stormed to big wins –– record-breaking success in the musical movie’s case –– at the box office ahead of the holiday.