Casey Stoner: has he been crashing too much?

My intention was to calculate how many times Shinya Nakano has crashed during this season, but then I moved my attention to Casey Stoner. For whatever is the reason I thought that the Japanese had many more crashes, maybe because of the green bike or because he had a few of them in the recent Gps. In reality Stoner is ahead of the Kawasaki’s rider not only in the World Classification, but also in total crashes (I will provide the answer to the poll question in a couple of days).
It’s not official, but it seems that next year Stoner will race with Ducati on Gibernau’s bike, the same rider who, last Sunday, he took out and sent to the hospital with a broken hand and a never completely healed collar bone to fix again.
Ducati’s choice has stirred a lot of controversy among fans because some of them claim that Stoner’s predisposition to crash will affect the 800cc evolution and, at the same, the potential to win the World Championship. Regardless, with one race to go, Casey has so far accumulated 119 pts, which put him in 7th overall position in overall classification. Also he has still the chance to beat Pedrosa in the 2006 Rookie of the Year Classification.
No bad for someone that has crashed ( ? ) in 15 races.