Trudeau:  "That is what Canadians expect when one makes a mistake. We own up to our mistake; we apologize for it,”

Not comparable, at all. Not. This was not a 'Canadian' making a mistake, like lying about running a red light. This was a person in a high-profile position of authority who wilfully lied for his personal benefit. Chamar. As a result of that, it has brought international exposure and discredited a military service and a sitting government.  

If this liar is allowed to remain, it sends a signal to others across the country that you too can undertake fraud, and if you get caught, just apologize and keep going.