Will you be able to spend more or save more comparatively than you can in Switzerland? Probably not. Doesn't mean you shouldn't do it, it is the best country in the world after all
I am from Canada and have lived in Vancouver B.C., Calgary Alberta, and Toronto Ontario. All popular cities and all very different in terms of quality of live, cost of living, attractions, scenery etc.
Someone replied saying that it depends where you live (sorry I forgot the name) and that is absolutely true. Vancouver, and Toronto are the most expensive cities in Canada, though Toronto is bigger and there is more variety and availability in terms of real estates and rental opportunities. Though, relatively speaking, I have found Geneva to be extremely expensive, and much more expensive than Canada.
I definitely recommend it, it would be a great experience. Canada is very multicultural, and there are many recent immigrants. Plus the stores are open Sundays, haha, good luck!
So, bottom line, you say what city you are looking at and some idea on your lifestyle for the family of 4 and I (and many others) can actually give you answers that will make sense for ya...
otherwise we will just keep talking about how all the stores and restaurants are open on Sundays and yes, I still miss that but it's only been 4 months so still figuring out all the other options!
For example, in Canada for two people we had budgeted $400 CDN a month for food. It was adequate, but not extravagant. Here we are paying more like 500-550 CHF per month and are eating much less meat, and less "treats".
For rent, in will vary, but for a two bedroom + living room, kitchen, bathroom suite in Calgary (a major city), you could pay anywhere between $800/month (if it is a basement) to 1400/month for a pretty swank set-up.
Wages do seem to be different as well. I don't know exactly what minimum wage is in each province but I would guess between $7-10/hour. For a bachelor's degree you could start around $35,000-50,000 /year, and for a masters, between $50,000 -70,000/year (before taxes).
One consideration I would keep in mind when considering Canada is weather. It varies a fair bit from province to province because Canada is so large. A lot of people prefer BC for it's climate, and therefore wages are lower. If you have any more questions, feel free to PM me, I would be happy to comment on what I am able to.
Good luck with the decision, it's a big one.
Lots to consider aside from what you earn too. Medical insurance is free in some provinces (Alberta & BC at least) --though seriously you get what you pay for! Emergency wait in hospitals in Calgary were averaging 26 hours last fall and they were sending all scheduled births to Montana a year ago. School overcrowding is a topic of late too.
Plenty of positives to outweigh the above though. Good luck with your decision.
I am researching a bit on this particular topic for a while as I am interested in moving to Canada for studies and for a job with my wife .
There is a link which could help you to get an idea how it looks the cost of living in Toronto.
http://www.toronto.ca/immigration/cost_imm.htm
good luck.