BC is certainly a good place to FIRE. Just gotta convince the wife!
Ontario... worries me. ORPP is nasty. Health Premium.. well, I don't mind it, really.
Honestly, it has to balance. I mean, my wife got a year of maternity EI, PLUS we get UCCB, whatever the other child benefit is. Someone has to pay for the roads, schools, hospitals.
Anyway, to the original question, I'd say you can retire on less in the US if you choose to. There are SO many opportunities for Americans to make easy side money (see Reddit's beermoney sub!), and with a $35k house you're golden.
Healthcare is the only thing going the other way.
Not that you have to be rich to retire in Canada, but the cost of certain things is higher - car insurance in Ontario, cell phones generally even on the most barebone offering, petrol, etc. Again in Ontario, your heating bill is not going to be cheap, where in the US you can choose your climate.