I don't think the spec IMU is going to make as big of a difference as some people think. The Yamaha MotoGP project leader has said he doesn't think so either http://www.bikesportnews.com/news/ne...ort-says-tsuya .

So for Marquez to lock up the championship he can't lose more than 2 points to Dovi or 24 to Rossi. If he wins the race or finishes in front of both it's championship #7, If Dovi wins it moves on. For Marquez to finish behind Dovi and still win it, they have to be 4th or lower. I guess we will see...