I'm not suggesting that they didn't have a good car. But they simply weren't anywhere near as competitive after round 7. Toyota & Williams aren't the teams to beat & I'm sure you know that. Ferrari were smart enough to realise that regardless of how much they improved, they weren't likely to win the championship & so pushed all of their development onto the 2010 car, which I think you'll see when the new season starts.My basic point is that Brawn achieved very little in way of development throughout the season, which is supported by their performance. They were the fastest until they lost the double diffuser & from then on were competitive but not dominant in any sense. Red Bull continued to improve throughout the year & lost the season because they didn't have a fast enough car to take on Brawn with the double diffuser at the start of the year.My only issue with the double diffuser is that it wasn't decided fairly. Either Brawn, Toyota & Williams had read the rules properly & were smart enough to take advantage in which case they should have had it all season, or they misread the rules & broke them, in which case they should have lost the points from races in which they used it. The compromise was ridiculous! "We think you broke the rules but just remove the part & don't do it again & we'll forget the fact that you've used that part to give you a virtually unassailable lead in this years championship."