Well, again, big universities have more scientists, so they will get more money, but that doesn't mean that's more money per person. Per person, the research is probably being looked after on an individual level. Big universities may have other funds to draw on to provide more help with the research.
As I said, the tri-council agencies, I think, do a pretty good job at letting you pick which researchers across Canada are doing the best work and therefore getting funded on an individual scale. You can't look at a great big U15 institution and say that it gets a lot more money than a small school does, because of course you're not going to give a lot to a small school, but for the per capita researcher, they probably will. Of course, also, some small schools don't even have graduate programs, so they will be paying for one student in the summer or what have you, and others will have large groups.
Otherwise, it's hard for me to say.