I read in an interview that Vettel feels that last year's car had a bigger advantage.
The difference this year, is that Vettel has progressed into the top tier of F1 drivers. For me, only Alonso is better...no one else.
I believe what Vettel is saying, because if you look at Webber, you can see that the RBR is a beatable car, BUT the driver piloting the rival car has to be in top form. The big problem has been that Alonso's Ferrari has been lacking and Hamilton (just isnt the same driver he once was).
Vettel would say that it makes him look better. I'd say that if I was vettel. It's pretty clear this years car is a step above last years by the gaps and pace they have when required.
The difference this year is MW knows he's a no2. Last year he thought he had equal billing and a 100% shot at the title.
Vettel is likely better and more confident than last year, to say last years car was further ahead than this years must be a dry german sense of humour.