I wonder if he's mentioned how long it'll take to sort the Yamaha?
To be honest Ducati look better having got rid of Rossi/Burgess, seems to me they spent the 2 years with Rossi making things worse. Instead of comparing Rossi/Stoner results on the Ducati look at Haydens results over the 3 years when he was teammate to both Stoner and Rossi.
2010 Championship Hayden was 7th on 163 points (Stoner/Ducati was 4th on 225 and Rossi/Yamaha 3rd on 233, Lorenzo/Yamaha was 1st on 383)
2011 Championship Hayden was 8th on 132 points, not significantly different to the previous year in fact the same riders filled the top 8 places in 2010/2011 but the positions were changed with Simoncelli improving from 8th to 7th.
2012 Championship Hayden was 9th on122 points. Looking at Haydens GP Career he's a top ten rider but not a serious year on year top 5 contender (and I hate to say that as he's a genuinely nice guy with zero ego who gets on with the job, doesn't complain much if at all and is delighted as much for his/Ducati's fans and the team when he gets a good result) but his championship winning year is the worst ever if you count the number of wins/rounds. 2 wins one at his home GP and the other thanks to a last corner coming together with Edwards at Assen (still enough to beat a Yamaha mounted Rossi).
The only thing that raised Ducati's game was a rider who could adapt themselves to suit it's characteristics, Capaross/Bayliss and especially Stoner but Stoner was then able to switch to a Honda and win taking the title back from Lorenzo/Yamaha. Rossi on the other hand having continually criticised the Ducati and having gone back to Yamaha doesn't look like he's capable of consistently beating his team mate let alone challenge for the title. Make no mistake he was looking strong on the first few laps but when the other's turned up the heat and the lap times dropped into the 1.44's he' was dropping back.
As far as the racing goes I hope the Ducati can stay up there as a top 5 contender as it gives the main Yamaha/Honda contenders something else to think about, as it is they've already got Crutchlow waiting to take a few points off them if they drop the ball and Rossi regardless of his chances of taking the title has the experience and a factory bike to put one over on them and that can only be good for the fans especially when we get to the 2nd half of the year and the main contenders (Lorenzo/Pedrosa/Marquez) have it all to lose while the riders who can't realistically win the championship will be pilling the pressure on looking for a race win.