Kate Winslet, Sigourney Weaver on James Cameron’s “Incredible” Female Characters and the “High Bar” He Set on ‘Avatar: The Way of Water’ By THR Staff For those who were new to James Cameron on the set of his ambitious Avatar sequel, Avatar: The Way of Water, his reputation preceded him. But there were no surprises for Kate Winslet and Sigourney Weaver, who had previously worked with Cameron on two out of…