George Wallace said:
			
		
	
	
		
		
			So naturally having a smaller population, our numbers are lower.  However, what are the statistics when comparing "per one hundred" or "per one thousand"?
		
		
	 
True, the US is larger than Canada. There's varying statistics that have been quoted. If we go by the Wikipedia article for fire-arm related deaths/100,000 people we see that the US is at 10.54/100,000, with homicide related to guns being at 3.6/100,000. Canada, by comparison is 1.97/100,000, with .38/100,000 for homicide. 
If we take statistics used for the 173 vice 8800 number than we can assume that the population of Canada is approximately 1/10 or 10% that of the US. Therein, if all things were equal, Canada should have 1730 gun incidents if corrected for population variance. Therein, the true statistical variance is the difference of 7070. The 7070 can only be explained by "other factors", namely culture differences, gun ownership, and crime.
Interestingly- the firearm related deaths by state /100,000 people is generally higher in smaller, rural, states than in larger urban ones (urban for this being California, Illinois, Massachusetts, and new York with the exception of Texas which is over 10/100,000).
So, population difference doesn't explain the variance. It's a mix of gun ownership, culture, and crime (though not completely urban crime- the three highest gun violence areas per capita in the US are rural counties in Mississippi and Alabama). 
https://en.wikipedia.org/wiki/List_of_countries_by_firearm-related_death_rate
https://en.wikipedia.org/wiki/Firearm_death_rates_in_the_United_States_by_state