Swiss sensation Marco Odermatt lived up to his top billing to get Olympic giant slalom gold on Sunday as he withstood a serious challenge from Slovenia’s Zan Kranjec. Odermatt, 24, held on to his first-run lead for his biggest career victory in 2 minutes 9.35 seconds after driving snowfall had delayed the start of the second run by 80 minutes. The overall World Cup leader and winner of four of the six season giant slaloms made up for the disappointment of crashing out in the super-g earlier in the week where he was also a top contender. Kranjec roared from eighth to second with the best second…