Everyone has opinions...But I would strongly caution against writing Rossi off, it's not a wise thing to do as history has amply demonstrated. There is no doubt that Casey and Jorge will be up the front, but to suggest the Valentino won't be competitive is brave.
In any case, the Ducati that Rossi rode at Valencia will not be the one he will be riding at Qatar, I can promise you that.
Seems Ducati think Stoner might go OK next year too !!!
http://news.smh.com.au/breaking-news-sport/stoner-will-be-main-danger-say-ducati-20110103-19dml.html
Oh, and Biaggi.
http://uk.eurosport.yahoo.com/28122010/23/biaggi-lorenzo-vs-stoner-2011.html