 Over the next ten years with AS Carcassonne Ponsinet became a vital member of the club's first team helping them to achieve five French rugby league championship titles and four Lord Derby Cups.During these golden years with Carcassonne Ponsinet cemented his place in the French national side forming a lethal combination with fellow Élie Brousse.Over these years in French colours on the international scene, Édouard became known as one of the premier forwards in the game, as in his strong performances against the Australians during their 1951 tour to Oceania.