I got a gig in Canadia in 2003 and the numbers at that time were pretty much same same as far as Edmonton vs Brisbane. I was a top pay scale aussie ATC at the time in OZ. Costs in Canada were cheaper and made it pretty much same same at the interim level they were offering there. I pretty much gauge my happiness based on my days off. Roster me, leave me alone when not at work, allow me to be a controller when I am and approve my leave as I want it. The rest, I don't really care about.
I have a bunch of opinion both ways including work and work culture and have family working in Canadian ATC right now if you wish to pm for further info. I have not worked in OZ for nearly 3 years now though to quantify.