They have been ahead since the middle of 2009. They aren't ahead because of 1 thing, it's never 1 thing if it was then surely someone would have learned it by now. If you sit down, and look at it logically(like in this article) then it makes a lot more sense.
A diffuser helps with pressure recovery. i.e. filling the void behind the car with air. Also you should actually read my post. I never said that a diffuser reduces overall drag. It produces a lot of downforce for little drag cost. Think about ratio of downforce to drag.
If the drag of downforce was equal to the gain in speed by not having the extra downforce, then i doubt the teams would spend any money in developing aero as it would come to the same result as minimal areo, of course in reality there are tracks like monaco which would be faster with maximum aero and drag then minimal areo and no drag.
Gaining time out of Aero has always been about gaining downforce with the minimal drag increase and in other cases, drag reduction without reducing downforce.
Im Sure if Redbull wanted they could make their car much slower in the top end for even better downforce but they are likely to be in scienario of drag reduction and Mechanical advantage.
And yes, a well thought out diffuser can actually lower the drag of the car compared to no diffuser or a poor one, but all the diffusers in F1 are very good. But if you gain 1% more downforce at 50mph, that's effectively for free as the drag forces will be very small. The skill is to gain that 1% at 50mph without decreasing efficiency (i.e. without creating lots of drag) at 160mph.
Vettel diaf. You dont have the right to celebrate and think you did well in a Formula 1 car while the entire other field ran in GP2 cars.
This ****** needs to get off his high horse and stop starting his interviews with "its a long race".
He should wipe that brown finger of his cuz its been up marko serveral times.
Hats off to Hulk, he did really well. No comment on Boullier sending Gro on Rai, seems like he's so bitter that Kimi is leaving. No one works for free, big boy. But Kimi didn't give a **** and had a great race with tons of luck under SC, P9 -> P2 is not bad.