Absolutely more Torontonians should consider Calgary as a place to live (or Edmonton, or Winnipeg, or Ottawa). Unfortunately, this article pushes the "cheap housing" without actually saying anything about the "bright lights". A lot of Torontonians never consider moving away from the city because they see the rest of the country as depressing hick towns and sprinkled over empty wilderness, with the exception of Vancouver (too expensive) and Montreal (too French). Mentioning the price of oil and the lack of a provincial sales tax is going to do nothing to attract people from Toronto (or Vancouver). You need to demonstrate that Calgary's actually a nice place to live and not just a boom/bust oil town for people looking to get rich quick and then retire to Vancouver Island. Even the photo in the article looks dreadfully boring.
Thinking about Torontonians moving to Calgary often reminds me of HBO's "Broad City", a show about two 20-somethings struggling to make it in NYC. The series ends (SPOILER ALERT!!) when one of them admits to herself that as cool as NYC seems, her life is actually terrible and she decides to move out to flyover country (Boulder CO) where she ends up becoming an artist and living the life she always wanted.