Big difference.  PCs are fiscally conservative who believe in balanced budgets outside recessions, believe in spending what is necessary for a civil society but nothing more, and having competitive taxes with other developed countries.  Liberals (at least the Trudeau/Wynne types) believe it is okay to run perpetual deficits, we should dramatically increase spending and the economy will take off without looking at its effectiveness, and that our tax rates can be one of the highest on earth without any brain drain or negative reprecussions on economic growth.  PC's aren't nativist, believe socially conservative issues are dead, and not libertarians (otherwise slightly less government, not radically less).