Things can change quite rapidly in F1. Look at Renault winning two WDC's in a row then starting to fall off the pace last year, and this year even with Fernando back in the team, they are not competitive at all. The same can apply to either McLaren or Ferrari; and the converse could apply to BMW where they can improve. We are not talking about a dramatic improvement - only fractions of a second per lap will elevate them to be able to win races and the championship. And I see, in the team, two drivers who can do it.