You're right. There are many difference between the Quebec system and the Ontario system. For example, in Quebec, drugs are covered by public insurance, but not in Ontario.
That is the clearest difference between the two systems. However, it is not a safe assumption—I'm not saying you made it; I'm saying this for the benefit of others—that the rest of the country should adopt a Quebec-style system.
One interesting reality is that as the pan-Canadian Pharmaceutical Alliance has done its work—that's a project of the premiers, The Council of the Federation—Quebec has not been a participant in that, and it appears that in some instances the pCPA is getting cheaper prices than RAMQ is getting.