Hayden is not only on the pace but somthing went wrong on his last section of his last Q-lap and he lost no less than 4 tenths off compared to his previous fastest lap in that section. He had the pace to be there on the first row.
But unless Rossi are taken out I can't see how he can win the championship. He can not do it by himself. Even if he win he need someone between him and Rossi. First of all I find him the least likely to win among the top 6, secondly who even dare to take the spot between him and rossi? Over the years we've seen rossi willing to take risks when he think it is worth it, and so far they have payed off, and those in they way of his goal has lost.
My guess is that more guys out there are going to think like Roberts did last race and that might be Rossi's best waraty for the title. That said, I don't think he need that, he will be well in front of Hayden as he cross the finsh line tomo... today.