The 10.5 mil does mystify me a little in terms of it size. While the case is unique in one way, it could also be classified as a form of state neglect and abuse similar to the Native Residential schools.  A G&M article states that the avg independent assessment settlement in these cases was $120K, 

https://www.theglobeandmail.com/news/politics/cost-to-redress-native-residential-school-abuse-set-to-pass-5-billion/article4251765/

I have to ask whether the magnitude of Khadr's suffering and violation of his rights exceeds those of the people in these schools by a factor of 87? Both groups were prisoners in their own right, both children, both subjected to abuse at the hands of their captors and both neglected by the state.