The onus was always on the crown to establish what the sentence should be. Here there's the presumption of that first finding, which is the dangerousness. There used to be a second part of the test, which was then to determine the sentence. Well, here there's a presumption of dangerousness, and the reverse onus is with respect to that finding, not with respect to the sentence. So there still would be a judicial discretion, but it's the onus on getting around the finding of dangerousness that has now shifted to the accused, where in the past that burden was on the crown.
On November 13th, 2007. See this statement in context.