For years people have been ascribing Vettel's FOUR WDCs to Newey (the design God). Thsi years has shown that Newey is as human as anyone else, and therefore, that Vettel has been under-rated by many.
His performance this year shows that Seb perhaps has a rather narrow window that he likes his car to be in relating to feel etc. Someone less experienced may have a somewhat broader window. Since I am Australian, I should be deluding myself that DR is showing that Seb has been lucky and take satisfaction from that. Instead, I will hereby predict that next year, Seb will have the RB handling more to his liking and, assuming that Renault have gotten their act together, will once again be a dominating force.
I would also point out that in 1965 Jim Clark, IMO the GOAT, was WDC, the next year, the first for the 3 liter formula, he wound up 6th. Is anyone here going to argue that his WDCs were undeserved and should be attributed to Chapman?