A Whitehall style parliamentary system is typically very stable. If you can get 40% or so of the votes in Canada, you end up with 60%+ of the seats in Parliament.
Occasionally, though, whacky things happen.
The consolation here is the 3 party coalition did get 53% of the popular vote, the BQ could have avoided this by holding out on the confidence vote agreement with Harper from day one after the election, and forced the Governor General to allow the Liberals an attempt to form a government.
The Canadian political class just lost a mild mannered well heeled economics professor and replaced him with a thin skinned elitist prig who can’t speak English and can’t articulate any economics policy in French, in the middle of an economic crisis.
This can’t end well. We can expect Alberta and Quebec to get exceedingly bellicose in the coming year.