(Reuters) – “Game of Thrones,” HBO’s Emmy-award winning fantasy epic, has surpassed “The Sopranos” as its most popular series ever, the premium cable network said on Thursday. Episodes in the fourth season of the show have an average gross audience of 18.4 million, including repeat showings, video on demand and mobile streaming, which broke the record of 18.2 million set by the 2002 season of the mobster drama, “The Sopranos.” Video on demand and delayed […]