The Red Bull is the best car at the moment and the reason why Vettel will probably win the championship again. Newey is a real genius. I have no doubt that at least half of the drivers in the field would have won the championship in a Red Bull in the last 2-3 years.
I don't know what's wrong with Webber though. Whenever the Red Bull struggles he seems to be on par with Vettel and sometimes even better, but as soon as the RB gets some extra potential, he cannot make use of it as much as Vettel...
Too bad, I think Alonso really deserved it this year, but unless something happens to Vettel in this race or in the next, his chances will be gone. Alonso really did a great job in a car that has never been the best in any race this season.