Twenty-four years after Gladiator was released to acclaim, Gladiator II arrives in cinemas and follows the sequel trend of being bigger, brasher and more expensive than its original. It also exhibits a campy tonal change in director Ridley Scott’s vision that has become more apparent in his last few films, from The Last Duel and House of Gucci to Napoleon. They say you can’t teach an old dog new tricks but for this octogenarian filmmaker, his embrace of camp has become one of the saving graces in his latter-day filmography. Yet it can only do so much heavy lifting in Gladiator II, an overly bl…