http://www.f1fanatic.co.uk/statistics/2 ... ip-points/
This is only a guide as form variations may dictate different results.
Over the First 12 Gran Prix, Vettel has amassed 259 WDC points and an astounding rate of 21.58 points per race. If we assume him to keep scoring points in a fairly linear pattern (taken from the form graph) we can estimate that Vettel will end the season as WDC on 410 points alone.
If we compare this to the most consistent of the chasing group of Webber, Alonso, Hamilton and Button, Webber has amassed 167 points so far this season at a strike rate of 13.91 points per race. Again if we assume Webber to keep scoring consistently, we can estimate that he will finish his WDC hunt on 264 points.
That is a margin over an approximate second place finisher of 146 points.
It would also suggest that a strong points finish for Vettel at Monza should all but secure him the WDC.
Again i would like to reiterate that this is based on past historical data, and is in no means influenced by speculation into the unknown when considering the remaining 7 races.
"I continuously go further and further learning about my own limitations, my body limitations, psychological limitations. It's a way of life for me." - Ayrton Senna