You think perhaps Vettel had a hand in developing the Pirelli?(a joke of course).
One thing that you have to give Vettel is that he managed the Pirelli tyre perfectly in 2011. Maintaining his speed and tyre longevity simultaneously was impressive to say the least.
How much of that was down to the RB7's characteristics, who knows as I recall Webber having a few good races with tyre management too in 2011.
As for strategy, I dont think its the drivers that make those calls. Engineers in the pitlane and various computer models for races, degradation and thousands of scenarios do that. I think Vettel is consulted, but he is guided into making the correct choices.
The only time a driver genuinely makes a great strategic call, is when the weather is inclement, as we have seen Button do so well.