It should have been such a treat those of us who love a good epic tale: a head-to-head between the Arthurian legend cycle and a great modern myth-in-the-making. On the surface of things, Channel 4’s Camelot should have had the edge over Sky Atlantic’s Game of Thrones: stellar cast, time-honoured story, prime-time terrestrial TV slot. At first sight they both looked handsome with their gorgeous loc