Good point said by a few of you that one mark of a great driver is that he can adapt to any car. Would you say Vettel has done that or would you say that hasn't yet come up in his case? I'm leaning toward the latter. Not to disparage him or take away from his skill, just that from here it looks like he has had it done for him since he got all comfy in Torro Rosso.
He has adapted to the challenges that were given to him.
He was successful in the rear-loose Torro Rosso, as well as the rear-planted Red Bull.
He was successful on both grooved tires and slicks.
He was successful on Bridgestone's and on Pirelli's.
He was successful with and without DRS.
He was successful with and without KERS.
He was successful with and without blow diffuser.
The only configuration he wasn't able to master was 3 wheels, but that's because the stewards didn't allow him.
None of those facts support the idea that Vettel can not adapt to a car.
Other than China 2012, where he choose a different type of set-up he thought he could make work, what support do you have for your premise?