Independent third parties disagree with you.  According to  the assessment of expert and neutral third parties such as the Parliamentary Budget Office and OECD Economic Outlook No. 87 May 2010

"Canada suffered a shallower recession and a speedier rebound than G-7 peers like the U.S. and the U.K., where growth levels are still low and recovery uncertain." — The Wall Street Journal, June 2, 2010

Heck even Liberal cheerleader Warren Kinsella credited the Harper government with handling the world-wide economic crisis well.

And managed to do so while cutting the federal tax burden (by $30 billion) significantly across the board on individuals and on business as the PBO found ("Revenue and Distribution Analysis of Federal Tax Changes" May 27, 2014) all the while raising the Canadian middle class to Number 1 in the world per the massive 2014 New York Times/LIS study. https://www.nytimes.com/2014/04/23/upshot/the-american-middle-class-is-no-longer-the-worlds-richest.html