Why is an isodemographic map difference from a traditional map of Canada

It is for my geography assignment. Thanks in advance... :)

Isodemographic maps shows the area of each part of the map as proportional to the population. Traditional maps show area as a proportion of map units to ground units of measurement.

Here's a really good example of an isodemographic map of Canada from 1997: http://www.csiss.org/classics/archive/is…
Compare to a traditional map of Canada: http://members.shaw.ca/kcic1/maps/canada…