By Chiara Fiorillo Prince William felt some “jealousy” and was “surprised” by Prince Harry’s success, an expert has claimed in a new documentary. The Duke of Sussex is “in his element” when talking to military veterans and in those types of contexts, he doesn’t have to be “a prince” but can simply be “Harry”, royal author Robert Jobson said. The commentator said the Invictus Games is “Harry’s number one passion project” and has been very successful since he founded the event in 2014. Mr Jobson said it is “impressive” how Harry has managed to raise money for the event as it comes with a high co…