Your argument suggests that there is no such thing as a 'rookie' in F1, since no-one ever enters F1 without having competed elsewhere! This year Kobayashi is not a rookie in F1, since it is not his first season. This year di Resta is a rookie in F1 because it is still his first season. P.S. German Touring Cars are nowhere close to F1. Any form of open wheel racing is closer: even Formula Ford and karts!
