I think too many people are making too big an issue of Vettel and his ability to overtake. I suspect that because Vettel is unpopular, those people are trying to find excuses to show that his success is only a result of his car, thereby making his victories mean nothing.
I think people are very bitter that a German driver has come into the sport, taken the ‘Boy Wonder’ title from Hamilton and also looks to become a multiple champion before him.
Some people will never accept that Vettel is a great driver whatever happens in his career.