Although it would have been hard for Ned to fight with that broken leg. No one would have spoken up to be his champion because they thought he was a traitor... And Joffrey was supposed to spare him but he was the worst.
Game of Thrones is probably the best show since Breaking Bad. Where as George R R Martin's writing can get stale, the show has always kept up the pace. This show has put me and many others on a crazy roller coaster of emotions that we hope never ends.