In all the previous versions 2010, 2011 and 2012, I used to play in Career Mode with Professional AI skills and I used to easily win the Championships. In 2013, I started Career with Professonal AIs and in Melbourne with Williams, I was 10 seconds behind Vettel. Changing AIs skill to Amature, I was 4 seconds behind Vettel. Is anybody having the same problem? Will that be a bug issue?