Born and bred Calgarian here, though have lived in Toronto for 30 years. Fly back at least 6x/year, any questions about Cowtown, I will try to answer to the best of my ability
Note; the only thing keeping me from moving back is -40c plus windchill, and can't forget honourable mention to plugging in the car, or driving away and forgetting to unplug the car, and btw when people say it is a dry cold, ignore them, once it hits -40c, cold is cold
Calgary is a lot harder to navigate versus Toronto if you do not have a car. Sure you could find a place to live near that feeds into the LRT system, but they do not have 24hr transit like Toronto does, so if you do not have a car, you would have to take that into consideration