Cities seem to go through ebs and flows. For a while Montreal was the main laggard. Winnipeg has had times where they are less than half of Halifax, but picked up last month...probably due to a single project that started. Ottawa on the Ontario side has been very slow for quite a while now, and I have my theories on why.
When I get some time to kill, I'm going to make a graph showing that last couple of years. Calgary is probably the most consistent of all the metros over the past 2 years, with starts climbing but no real bursts or drops. Maybe due to so many smaller apartment style projects, row homes, and duplexes?