I just checked Sudbury, ON.
Just one crappy mall downtown (, a big-box centre to the east, a larger mall surrounded by big boxes to the northeast, and another crappy mall to the south (Southridge).
Seriously, I think Montreal still gives us healthy competition even with Eaton Centre/Metropolis/Atrium, with Simon's/Place Montreal Trust, Ailes/Centre Eaton, Cours Mont-Royal, Place de la Cathedrale/La Baie and Place Ville-Marie shopping all next to each other and connected by tunnels and all open evenings and weekends.
And no Sears.