In my opinion Jenson isn't a great champion, he was lucky at the start of the season with his Brawn GP car being top of the class, but during the second half of the season, when the other teams were catching up with their cars you started to see Jenson's limited abilities. Especially in qualifying. But the guy who has the most points at the end of the season is champion and he had the most points. Bring on 2010.
but never the less some awesome overtakes yestaday
But Lewis Number 1 in 2010 
There have been a number of past WDC's who had the best machinery and scored just enough point's to win the title. To me a great champion is one who realizes what
they must do to secure the title and if that mean's just scoring points then sobeit. Was
Jochen Rindt not a great champion because he won the WDC posthumously after being killed during practice for the 1970 Italian GP?
Jenson's downfall starting the second half of the season only mean's, atleast to me, that he was not as good at setting up the car as Rubens was/is. Anyway we all have our opinion concerning JB's WDC title

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