Applying to schools in Canada?

[b_italia]

I'm right now debating whether or not I should apply to some grad schools in Canada.  I never attended school in Canada so I'm not sure what their grading polices are like.  I recently had a brief conversation with someone who went to grad school in Canada and they told me that professors in Canada rarely give out "A's" or perfect scores.  Is that true about the grading procedures in Canada?  I know it's common to get A's or full points on assignments in the US (obviously for assignments that deserve this grade), but I'm worried that in Canada they are much tougher when it comes to grading.  Any feedback from Canadian students? I really don't want to end up with a B average or lower in grad school, which is why I'm asking. 
I'm looking at applying to McGill, University of Toronto, and Concordia.