Extremely interesting numbers. What it doesn't do, of course, is factor in extenuating circumstances, which is why, for example, Michael Schumacher is trailing Rosberg by so much this season according to the numbers; there's obviously no column for mechanical breakdowns.
Slightly off-topic, but I find the Alonso/Trulli comparison very interesting. The closeness of the numbers would certainly indicate that the latter might not have deserved to be treated as he was, but then we know that numbers are not the whole story and that, if championship points were awarded for qualifying, Trulli would be an all-time great. But his numbers put him closer to Alonso than Hamilton, which further strengthens the "pinch of salt" way in which these stats should be viewed (which I'm sure the poster was aware of, btw).
Regarding Vettel specifically, perhaps it is also worth remembering that he likes his statistics, so is likely to come out well on paper. I would suggest that Webber is possibly less bothered about the stats. Nevertheless, I think the numbers do paint a fairly representative picture in for Vettel speed relative to his team mates...and maybe show that Liuzzi was another Italian who could have been dealt a better hand early in his career
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