Short and sweet answer: NO.
I am truly at a loss at why you'd consider such a thing.
Canadians are just as fearful that what happend to the US could happen to them. I was in Toronto with one of their major broadcast-related companies when the whole thing happened last Tuesday -- they were every bit as shocked and upset and scared as Americans.
Will they handle security better than the US? Is this less likely to happen on a Canadian plane than an American plane? There are no easy answers, but methinks: NO.
RAD