Jenson is arrogant IMO. He's an average driver in a superb car; Lewis is a superb driver in a below-average car. No wonder he's unhappy with its performance. Even Ferrari have managed to sort themselves out with Massa.
Ferrari were stupid with Kimi. They paid him something like 40-50m euros up-front after he signed for them; now he's a world champion, what else is there to race for? He's got the money, he's got the title, and now he's got his own small teams and money earners.
Alonso, despite my intense distaste for him, is another very good driver in an alright car.
Ross Brawn's brilliance however is putting everyone else in the shade.