Mostly useless survey
For apps which use Crittercism's crash reporting component.
Do we know know which apps those are and if they are representative for the whole software catalog for the devices? Only Apple has all the crash reports across all iOS apps (and even then only for people who have switched on the sending of crash reports - as applicable across versions.)
Another thing to consider is that iOS 5 is relatively new and there are going to be crashes due to apps not being updated yet and that Android is likely to have a similar problem as ICS actually starts rolling out.
One more thing to consider is the the number of potential issues with the data it's self
On top of that, this survey was undertaken by a company which receives it's funding from Google Ventures